跟讀練習: Why Don't Snakes Poison Themselves? - 通過影片學習英語口語

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The Egyptian cobra's venom is super toxic.

Even in tiny quantities, it can kill relatively big animals.

But the Egyptian cobra, as well as pretty much every other toxic animal,

has to produce and store those deadly chemicals inside its own body.

So why don't toxic animals hurt themselves?

Hi, I'm Cameron, and this is MinuteEarth.

The first, and probably most obvious,

way to avoid kicking your own bucket is to make sure your poison doesn't work on you,

which is a strategy many poison dart frogs use use.

When their poison gets on another critter,

it snaps into specially shaped receptors in that animal's nerves,

eventually stopping its heart.

But the poison doesn't affect the frog itself,

because the frog has evolved a slightly different version of that nerve protein,

changing its shape just enough to prevent the poison from ever latching on.

Another option is to have a way to soak up your own poison before it can kill you,

like the pitohui, a tropical bird that puts poison in its feathers.

In order to keep itself safe from its own poison,

it produces proteins in its bloodstream that act like sponges that stick to,

and basically disarm, poison molecules.

The next strategy is even simpler.

Simply store your toxins in a place where they can't hurt you,

like murder hornets and black widow spiders do.

Both of these animals are susceptible to their own venom,

but their weaponry is located in a place where it is walled off from the rest of the body,

and for them, it's physically impossible to unleash it on themselves.

And finally, you could store your toxins in an inactive form,

like the slow loris, the world's only venomous primate, does.

The toxin the loris secretes from its armpits is completely harmless on its own.

It's only when the animal licks its armpit,

putting the venom in contact with saliva,

that the venom becomes activated.

And when the loris subsequently bites an enemy,

that venom gets transferred to the bite wound,

where it causes the victim's flesh to rot away.

Because carrying deadly chemical weapons inside your own body is such a high-stakes situation,

lots of toxic species actually use more than one of these strategies to stay safe.

Which brings us back to the Egyptian Cobra,

which uses all four methods to protect itself from its own venom.

The snake has those modified nerve proteins that make it immune to the nerve paralyzing toxin in its venom.

But since that venom is a cocktail that contains other toxins to,

the snake also stores it in walled-off glands.

Beyond just locking the venom away,

these glands also temporarily inactivate the venom in part by bathing it in acids.

It only becomes reactivated in a basic environment, like its victim's blood.

And if the venom happens to leak into the snake's own blood,

a sponge-like protein in its bloodstream mops up the toxins before they do any harm.

In other words, if you're going to be venomous or poisonous, Use protection.

If you're a snake and you want to level up your game,

you develop chemical weapons.

And if you're a human and you want to level up your career,

you develop, well, developer skills.

Boot.dev, which sponsored this video,

has created an easy way to learn backend web development in languages like Go and Python.

Hey, another snake!

They've gamified the whole learning process,

so as you learn to code,

you'll learn XP, levels, achievements,

and even get to complete quests.

All the game features on Boo.dev are designed to keep you motivated and moving toward your goal,

job-ready programming skills.

And all of this is within a system specially designed to have you writing eight to out of code,

because, well, the best way to learn is by doing.

Click the link in the description and use the code MINUTEEARTH to get 25% off your first month,

or even off your entire first year if you choose the annual plan.

Thanks, Boo.dev!

Thank you.

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背景與概況

在這段影片中，講述者Cameron深入探討了毒蛇如何在體內儲存毒素而不自傷的機制。通過分析埃及眼鏡蛇等毒性生物的進化策略，他為觀眾解釋了這些生物是如何避免自己的毒素傷害自己的。這不僅是生物學的一個有趣課題，也是理解毒性動物生存策略的視窗。瞭解這些內容可以加深我們對自然界的認識，同時對於學習英語的朋友來說，這也是一個很好的口語練習材料。通過看YouTube學英語，我們可以在學習過程中吸收科學知識和提高我們的英語能力。

日常交流中的五個重要短語

毒素 (toxin) - 生物體內產生的有害物質。
進化 (evolution) - 生物為了適應環境所做的變化。
免疫 (immunity) - 對特定毒素或疾病的抵抗力。
儲存 (store) - 將某物放置在特定地方以備後用。
啟用 (activate) - 使某物開始發揮作用。

通過使用這些短語，您可以更好地描述生物學現象，並且可以在與他人討論相關主題時做到胸有成竹。這些短語在shadowspeak中可以通過重複練習來提高您的發音。

逐步影子跟讀指南

為了幫助學習者掌握本影片的內容，這裡有一個逐步的影子跟讀指南。影子跟讀是一種有效的提高英語發音和口語流利度的練習方法，您可以在許多shadowing site上找到類似的資源：

首先，觀看影片並仔細聆聽每一個單詞。在這個過程中，您需要記下那些您覺得難以發音的詞彙。
重複觀看影片，嘗試閉上眼睛，專注於聽力和理解影片中的科學內容。
開始逐句模仿，先用慢速播放功能。確保您能準確跟上講者的語速和語調。
每次抄寫一小段，然後大聲朗讀，確保您的發音與講者一致。可以結合提高英語發音的方法，糾正自己的發音。
最後，將速度調整到正常，有意識地跟讀，直到您能夠流利地複述整段內容。

通過以上步驟，您不僅能深入理解影片內容，還能在日常溝通中更加自信地表達自己的想法。

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
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	has evolved · has created · They've gamified
被動語態 be + 過去分詞 — 強調發生了什麼，而不是誰做的	is located · are designed

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: Why Don't Snakes Poison Themselves? - 通過影片學習英語口語

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