跟讀練習: Inside The SpaceX Starfactory - 通過影片學習英語口語

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This is the Star Factory.

At over one million square feet, it is the biggest and most advanced rocket manufacturing plant in the world.

It's also the location where SpaceX is building their Starship.

And they are building a lot of them.

With just one Star Factory, SpaceX can build up to 365 Starships per year.

That's one rocket every single day.

To accomplish this, they need a factory unlike anything you've seen before, and inside the Star Factory, we will find a giant,

automated machine that is building rockets for the future of human space exploration.

It all begins with raw materials.

It's crazy to think that the majority of an epic starship rocket starts out looking like this.

Just a big roll of stainless steel.

The metal is about 4mm thick, and each sheet is 1.8m wide.

SpaceX uses their own custom blend for this stainless steel, which they've developed to handle the unique demands of a reusable rocket.

Of course, it needs to be strong, but that strength needs to be maintained from super low temperature conditions when the rocket takes off,

loaded with cryogenic fuel, all the way to super hot conditions when it comes screaming back through the atmosphere.

SpaceX Steel is actually strongest when it's cold, at the time when the rocket is under the heaviest load.

The metal also needs to be corrosion resistant because these reusable rockets need to last for a very long time,

and they'll spend most of that time hanging out in the salty sea air.

But at the same time, this particular alloy needs to be easy for the Star Factory to work with,

meaning it can be bent into shape and welded together without any complications.

This is the first real step in the manufacturing process, an automated machine that cuts sheets of metal from the rolls and welds them into rings.

Then the rings are stacked into segments of three or five, and everything is welded together by a robot arm

that circles around the stack and completes the job in one quick fluid motion.

There was a time where every Starship was hand-welded from top to bottom, but as SpaceX moves towards mass production,

they are automating every part of the process that they can.

Now, human welders are still responsible for attaching small parts that demand precision and adaptability, but all of the larger jobs have been handed off to machines.

Now, for the curved bits of the rocket, like the nose cone and the fuel tanks, the steel needs to be bent into shape before it can be welded together.

For this, SpaceX uses a process called hydroforming.

It's basically using a very high-pressure liquid to push the sheet of metal into a mold.

The amount of force used to bend steel like this can reach over 36,000 psi, which is twice the pressure you'd experience standing on the bottom of the ocean.

Once the parts are formed into shape, they go into the same rotating welding machine to make the pointy end of the nose cone.

Now, from here, different sections of the rocket will follow different paths through the Star Factory.

So it's not like a traditional production line, where everything flows down one big conveyor belt

and different parts get added on along the way until you end up with the finished product.

That's the concept that was originally popularized by Henry Ford back in the 1920s, and it's remained a manufacturing standard until today.

But this does not mean it's the best way to make a car or a rocket.

Hey, I've got three quick things I need to tell you about.

And hi, I'm Sean, and we are the actual humans behind the space race.

See this?

This is real After Effects animations being done live right now.

All of our 3D, all of our 2D is done by real people in the house.

No AI involved.

This is our render rig.

It costs us eight grand and it still takes a few days to sometimes weeks just to render out a 3D project.

That's Ted.

He's got a seven month old at home and he still gets up before her just to get work done. And this is Brady.

He's got a four month old at home and Jay behind the camera.

He's got two of his own.

So yeah, this team is basically running on caffeine and not much sleep.

Oh, and I've got a little fella on the way too, so if the upload schedule gets a little weird around October, you know why.

My point is we are all real people, and it takes real time and money to produce these videos.

So if you'd like to support us in any way, here's how.

First, we've got a free newsletter, thespacerace.news, all the most important weekly space news straight to your inbox.

Second, that join button gets you early access, plus behind the scenes on how we actually build this stuff.

And it is the most direct way to keep the lights on around here

and also help us not be so dependent on sponsorship money.

Third, we've got new merch, including a shirt that says, I love Uranus.

Yes, we know exactly what we're doing and we have no regrets.

So read the newsletter, join as a member on the channel, buy the merch, or just continue watching the videos, whatever works for you.

No matter what, thank you for supporting the channel and the people behind it.

The unique thing about SpaceX is

that the man in charge has just as much experience building cars as he does building rockets.

Elon Musk has developed with his engineers at Tesla is a new approach to mass production

that replaces the singular production line with parallel manufacturing.

Tesla calls it the unboxed method.

So instead of treating the car like a box that you need to put stuff in, they break the vehicle apart into chunks front, back, left, and right,

and then they build each one of those chunks simultaneously at

different production stations before bringing it all together in one final assembly.

Now, SpaceX doesn't call their manufacturing process unboxed.

Rockets are more tube-shaped, and untubed doesn't sound very cutting-edge,

but Elon Musk has described production inside the Star Factory as a linear-adjacent flow, which does sound really technical,

but I'm pretty sure it means the same thing as what we just described with unboxed.

So one of the really cool aspects of the Star Factory is the way

that they move pieces of the rocket from one production station to the next.

Because there's no big conveyor belt running through the middle, they need a mechanism that can move really large objects through these adjacent flows.

That's why the entire production floor is framed by this gridwork of steel beams.

They aren't there to hold the roof up.

They create a network of tracks for overhead cranes

that can lift a chunk of rocket straight up

and then carry it over to the next location where it's placed on one of these rotating stands

that spins the nine meter wide rings so that workers don't have to constantly be walking around with their tools, they just bring the work to them.

So what you end up with is all of these different rocket parts going through various stages of manufacturing, all in constant motion and under one roof.

Now, we can compare that to the way that NASA builds one of their rockets, like the Artemis program's space launch system, because the general rocket building strategy is not so different,

but the manufacturing takes place on a much larger scale.

SLS is not built in just one factory, it actually begins with several factories spread out across the United States,

from California to Utah and Louisiana, where different segments of the rocket are manufactured by separate contractors.

For Artemis missions, there are even parts of the spacecraft made in Europe. And then, all of these big chunks of rocket get loaded onto boats

or trucks or cargo airplanes and moved to NASA's Vehicle Assembly Building at Cape Canaveral, Florida, where the rocket is finally stacked from the ground up.

This is a large part of the reason why it's taken four years to launch two SLS rockets.

So inside the Star Factory, cranes and production stations take the place of a global supply chain.

That's how you go from one rocket per year to one rocket per day.

But there is one big similarity here, and that's the way that each segment of the rocket is built up independently before being brought together in the end.

If we break up our Starship the same way that Tesla breaks up a car, then we essentially have three big sections.

Top, middle, and bottom.

With the top consisting of the nose cone and payload bay, the middle essentially just being fuel tanks, and the bottom being where the engines go.

The Star Factory also makes super heavy boosters, which are a lot more simple on the top with just a ring that connects the two stages together,

but a lot more complicated at the bottom with 33 engines and all of the plumbing necessary to make them run.

We'll focus on the ship itself, because this is the part that actually needs to be mass-produced.

The booster can provide the muscle needed to reach space, then turn around and come right back to the launch site

100

and be ready to do it all again in about five minutes.

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So you only need one or two of these per launch tower and you're good to go.

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But the ships could spend hours or even days circling the Earth before they come back down.

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Some might even fly to Mars, and even when they do come back, they'll need to be fitted with a new payload, which can also take a few days or weeks.

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So in order to maintain a high launch frequency, which is what SpaceX will demand from these rockets,

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you need many ships that are in various stages of flight at any given time.

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So when you hear SpaceX talk about building one rocket every day, this is what they mean.

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If we start from the top and work our way down, once the formed panels of the nose cone are welded together,

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another robot arm is going to come in and start attaching these little pins all over the outside surface using spot welds.

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These are anchor points for heat shield tiles, and that is our next step.

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From the welding station, the nose cone is going to be lifted over to the thermal protection station.

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Here the workers are going to install a black sheet over the entire protected surface of the nose cone.

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This is a secondary heat shield material that can work like a backup if any of the main tiles ever fall off.

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Over that goes a layer of white foam which provides insulation and folds up to fill the gaps in between tiles.

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And then lastly, these black hexagons are pushed into place, workers line up three holes on the back of the tile with the pins on the rocket, and then they click to lock in.

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SpaceX makes the tiles themselves in their bakery.

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This is really not so different from the process used to make other glazed ceramic products like floor tiles or dinner plates,

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and the Starship Bakery has a fully automated line that can produce over 1,000 hexagon tiles every day.

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Eventually, that will scale up to 7,000 tiles per day.

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Now, at the same time that our nosecone is being assembled, there are two smaller operations that are also running in parallel.

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One is building header tanks.

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These are small, round fuel tanks that are made of the same hydroforming stainless steel as the ship.

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These hold only a small amount of propellant that gets used for the final landing burn, and they'll be mounted up inside the tip of the nosecone.

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This is one of the biggest advantages with building in chunks.

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If you had stacked the entire rocket first, and then tried to install a fuel tank up in the very top,

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that would be a lot more difficult for the guys who are up there doing the plumbing work.

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The second process that's happening is building out wing flaps.

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Flat sheets of stainless steel are welded down to a frame

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or die cast metal beams that include three hinge points for connecting to the ship.

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A thin strip of stainless steel is rolled over to create the edge, and then the flap gets the same heat shield treatment as the ship.

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Meanwhile, back on the nose cone, crews are welding attachment points for the flaps onto the outside,

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while on the inside, electric motors that control the flap movements are mounted and wired up.

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Then, overhead cranes lift the flaps into position while production teams bolt it all together.

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At the same time that this is happening over at another station, the payload bay of the ship is being assembled.

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This is made from three vertical rings of stainless steel.

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On one side it gets the usual heat shield tile treatment, while on the other side crews begin cutting holes in the body.

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Starship needs one long slot removed to make a payload door where Starlink satellites can exit.

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It also needs two small round holes below that for docking ports

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that will allow Starship to connect in space and transfer fuel.

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The parallel operation going on here is building the Starlink payload rack.

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It's a mechanism that holds a couple dozen satellites in a vertical stack, then deploys them one at a time while moving the rest up into position.

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It's a lot like a PEZ candy dispenser, so that's what SpaceX nicknamed it.

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Once that gets done, it gets hoisted by a crane, brought over and dropped down into the payload section,

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and then a small door flap is installed to cover the slot and docking connectors cover the holes.

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So now we've got two halves of the top section that have been built simultaneously along with their various sub-components.

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Then all we need to do is hoist the pointy bit on top of the payload bay

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and make another robotic weld around the outside to fuse them together.

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This is why the Star Factory has a staggered roofline

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that is lower at one end where the raw materials come in

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and taller at the other end where assembled rocket sections come out.

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Okay, so that's our top segment done, and at the same time that all of this work is going on, the bottom and middle sections of the ship are being made in the same kind of way.

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There's generally one big job being done in parallel with two

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or three smaller jobs that all come together to complete the segment.

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And they aren't just building one nose cone at a time.

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The Star is always in the process of building multiple rockets all at once.

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So these are all of our adjacent flows, and while they might not appear to be linear right now,

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we are about to see where everything converges at one single point, the Gigabay.

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This building provides almost as much square footage as the Star Factory, but it then raises the roof to a height of 116 meters,

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which works out to be 46 million cubic feet of internal volume.

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For some scale, if you were to take six Costco's and smash them all together into one building, then stack that building another 13 Costco's high.

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This is the same idea as NASA's Vertical Assembly Building.

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It's the place where all of the big segments come together and a rocket is truly born.

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NASA's vertical bay was originally designed in the 1960s to hold and assemble four Saturn V rockets simultaneously,

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and this allowed NASA to actually launch four crewed Apollo Moon missions inside the span of just one year, which is pretty impressive.

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The Star Factory Gigabay has enough stations to assemble 24 ships and boosters at one time,

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allowing for 12 fully stacked Starship Superheavies to be finished simultaneously.

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The first step in

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that finishing process is to again hoist our rocket segments up on a crane and begin joining the top, middle, and bottom into one single unit.

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Once that's done, work crews on different levels of the Gigabay start the job of tying this all together.

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That means hooking up plumbing lines for fuel and compressed gases that the rocket needs to operate through flight.

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They'll be wiring up all of the different systems so that the ship has power

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from nose to tail attaching all of the final heat shield tiles

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and running final checks to make sure

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that this newly built rocket is ready to begin the final launch preparation and testing

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there's only one thing that spacex doesn't do at the star factory

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and that's make engines the raptor engines for a starship are

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still made on a production line in hawthorne california then they're

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trucked across the country to a testing facility in mcgregor texas where they they get fired up

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and run under flight conditions to shake out any bugs, and then they are moved over to Starbase.

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Engine installation is always the final piece of the puzzle.

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The ship or booster will go through stress testing under simulated launch pressure first to verify

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that the structure can actually hold up.

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Then it might have a few of its engines installed, 3 out of 6 for a ship, or 10 out of 33 for a booster,

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and there will be a hot fire test to make sure that the plumbing and electrical systems are all working as intended.

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Only after these checks are done can a rocket return to the Gigabay to have its full engine count installed

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and finally be considered ready for launch.

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Now, at this point, the Star Factory is already building ships and boosters faster than SpaceX can launch them,

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so there are many vehicles waiting in the wings of the Gigabay for their chance to fly.

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And that's how things are going to be for now, until SpaceX has a level of confidence in the Starship

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that they can start putting it to real-world use and begin deploying the new Starlink V3 network.

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At that point, they'll want to be flying Starship at least as often as they currently use the Falcon 9 rocket, which is pretty much every single day.

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So that's the point where StarFactory really gets to start flexing its muscle and ramp-up production,

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which will need to continue as SpaceX moves on to launching their Orbital Data Center satellites in addition to Starlink.

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Then they'll be doing these missions to the moon that require multiple refueling launches to support just one lander.

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And then of course, at some point, SpaceX will begin sending these ships to Mars as well.

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And that's where this whole one rocket a day thing starts to make sense.

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There's not just one big plan for Starship, there are many, and they all have to be happening at the same time, so you need a lot of rockets,

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way more than the world has ever seen, and this is where it all gets built.

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本課的詞彙與口語要點

這節 B2 級別的口語課以影片“Inside The SpaceX Starfactory”為素材。影片中反覆出現的詞有：rocket, spacex, factory, star, ship。這段影片共有 197 個句子、3243 個單詞可供跟讀。講話部分時長為 17:44。說話人語速較快，每分鐘約 183 個詞，會出現較多連讀和弱讀。 82% 的單詞屬於英語最常用的 3,000 詞，其餘的詞建議在練習前先學一下。

影片中的重點詞彙

影片中最難的 15 個單詞，附發音和釋義：

單詞	發音	釋義
starship 名詞	/stɑɹʃɪp/	星際飛船 /星際飛船
weld 動詞	/wɛld/	焊接
tile 名詞	/ˈtaɪ.əl/	瓦, 磚瓦 /磚瓦
cone 名詞	/ˈkoʊn/	錐體 /錐體
payload 名詞	/ˈpeɪloʊd/	裝載量 /裝載量, 載荷 /載荷
stack 名詞	/stæk/	堆
booster 名詞	/ˈbustɚ/	助推器
chunk 名詞	/t͡ʃʌŋk/	塊 /塊
assemble 動詞	/əˈsɛm.bəl/	收集, 組合 /組合
crane 名詞	/kɹeɪn/	鶴 /鶴
vertical 形容詞	/ˈvɝ.tɪ.kəl/	豎的 /豎的, 垂直
simultaneously 副詞	/ˌsaɪmlˈteɪnɪəsli/	同時地 /同時地
automate 動詞	/ˈɔ.təˌmeɪt/	自動化 /自動化
attach 動詞	/əˈtæt͡ʃ/	附上, 附
adjacent 形容詞	/əˈd͡ʒeɪ.sənt/	鄰近的 /鄰近的, 毗鄰的 /毗鄰的

影片中出現的短語動詞

單詞	發音	釋義
come back 動詞		回來 /回來, 返回
go through 動詞		通過 /通過
come out 動詞	/ˌkʌm ˈaʊt/	出, 出來 /出來
come together 動詞	/ˈkʌm tʊˈɡɛðɚ/	集合, 聯合
get up 動詞		起床
take off 動詞		脫 /脫
turn around 動詞		轉身 /轉身

影片中的語法

說話人最常用的結構，並附上影片中的原話：

結構	影片中的用法
被動語態 be + 過去分詞 — 強調發生了什麼，而不是誰做的	be maintained · can be bent · are stacked
現在完成時 have/has + 過去分詞 — 過去發生但與現在仍有關聯的事	you've seen · they've developed · have been handed
定語從句 who / which + 從句 — 補充說明人或事物	psi, which is · boosters, which are · payload, which can

需要注意的發音

說話人用了 27 次縮略和弱讀形式，例如 they'll, doesn't, we've。請按聽到的簡短形式來說。

“sh” 和 “zh” 音: starship /stɑɹʃɪp/, complication /ˌkɑm.pləˈkeɪ.ʃən/, insulation /ˌɪnsəˈleɪʃən/, precision /pɹɪˈsɪʒ.ən/, accomplish /əˈkɑm.plɪʃ/
長單詞——注意重音位置: simultaneously /ˌsaɪmlˈteɪnɪəsli/, complication /ˌkɑm.pləˈkeɪ.ʃən/, similarity /ˌsɪm.ɪˈlæɹ.ɪ.ti/, insulation /ˌɪnsəˈleɪʃən/, independently /ˌɪndɪˈpɛndəntli/

中文母語者容易讀錯的音：

/v/ — 不要讀成 /w/，上齒輕觸下唇: vertical /ˈvɝ.tɪ.kəl/, conveyor /kənˈveɪɚ/, overhead /ˈəʊvəˌhɛd/, verify /ˈvɛɹɪfaɪ/, curve /kɚv/
詞尾子音 — 要讀清楚，後面不要加母音: starship /stɑɹʃɪp/, weld /wɛld/, payload /ˈpeɪloʊd/, stack /stæk/, flap /flæp/
/r/ 和 /l/ 的區別: linear /ˈlɪn.i.əɹ/, similarity /ˌsɪm.ɪˈlæɹ.ɪ.ti/, airplane /ˈɛɹˌpleɪ̯n/, exploration /ˌɛkspləˈɹeɪʃən/

如何用這段影片練習

先完整聽一遍影片，不要開口，記下不認識的單詞。
先用 0.75 倍速逐句跟讀，熟練之後再回到正常速度。
錄下自己的聲音並與原聲對比，特別注意 starship, weld, tile 這類單詞。

什麼是跟讀法？

跟讀法 (Shadowing) 是一種有科學依據的語言學習技巧，最初開發用於專業口譯員的培訓，並由多語言者Alexander Arguelles博士普及。這個方法簡單而強大：您在聽英語母語原聲的同時立即大聲重複——就像是一個延遲1-2秒緊跟說話者的影子。與被動聽力或語法練習不同，跟讀法強迫您的大腦和口腔肌肉同時處理並模模擬實的講話模式。研究表明它能顯著提高發音準確性，語調，節奏，連讀，聽力理解和口語流利度——使其成為雅思口語備考和真實英語交流最有效的方法之一。

影子跟讀法: 閱讀完整分步指南 →

跟讀練習: Inside The SpaceX Starfactory - 通過影片學習英語口語

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