Luyện nói tiếng Anh bằng Shadowing qua video: How to NOT Fail a Technical Interview
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The single worst moment of my life was the moment I was born.
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The single worst moment of my life was the moment I was born.
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I wish that were true, but as a software engineer, I've experienced far worse things during technical interviews.
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If you're lucky enough to survive tutorial hell before the age of 25, and find a way to impress the algorithms that automatically read your resume, you get dropped into a high-stakes life-or-death game with a six-figure salary on one side and RVs on the other.
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You can tell yourself the interview process is broken, and maybe it is, but like most things in life, you can't control it and just have to play the game.
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In today's video, you will experience the psychological rollercoaster ride that is the technical interview.
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Along the way, you'll learn the secrets to high-pressure problem-solving on the spot, and how to impress the interviewer even if you totally suck at writing code.
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To make this hyper-realistic, I've invited a special guest who's conducted hundreds of interviews in the real world.
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Let the story begin.
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It's been a long, difficult year of hashtag learn to code.
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I've turned down dates with beautiful women, stopped doing flat-earth research, and even canceled Netflix, all for the opportunity to stare at a computer screen for the rest of my life.
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Thanks to this awesome video I watched on YouTube, I finally landed an interview with Big Scary Tech Corporation.
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I've got dozens of leak code questions and a bunch of half-finished Udemy courses under my belt.
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Nothing can stand in my way now.
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I'm about to jump on this call and change my life forever.
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Hello, Mr. Fireship.
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My name is the Prime Gen. Welcome to hell.
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Welcome to hell.
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I'm just kidding.
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I'll be conducting your interview today.
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You know, let's just get straight into it.
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I'm going to ask you actually a classic question.
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It's called FizzBuzz.
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I want you to print out numbers 1 through 100.
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But if it's divisible by 3, I want you to print out fizz.
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If a number is divisible by 5, please print out fuzz.
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But if it's divisible by both 3 and 5, please print out fizz and buzz.
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Fizzbuzz, how cliche is that?
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I mean, I just built my own compiler in JavaScript last night.
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This is too easy.
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Wait a minute.
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I have no idea what I'm doing here.
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Hashmap, link list.
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Mom, mom, why am I so dumb?
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Wait, directed graph.
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I can't do it.
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I'm just gonna tell him I can't do it.
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Binary treat.
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I'm an imposter.
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I'm blacking out.
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A few moments later.
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Mr. Fireship, before we write any code, let's just talk about the problem.
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How would you kind of approach a problem like this?
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You know what?
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I think I've already failed this interview, which means I don't care anymore.
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And magically, when I stop caring, the anxiety goes away.
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Screw the code.
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Let's just talk about the problem.
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Okay, so it looks like we have three conditions here.
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And when we have conditions, we use a conditional statement like if.
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One way I could represent this is with a flowchart on a whiteboard.
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Or if that's not an option, I might start by writing some pseudocode because I don't want to worry about syntax or boilerplate before I even know what I'm going to implement.
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For each iteration of the loop, we have a number.
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If it's divisible by 3 and 5, we print FizzBuzz.
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Otherwise, if it's divisible by 3, we print Fizz.
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Or if it's divisible by 5, we print Buzz.
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And finally, just print the number if none of these are true.
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Wow, so this is actually a very simple problem when we take the time to break it down.
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I was totally overthinking it.
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I was expecting something with a really complex solution, because this is Big Scary Tech Corporation after all.
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You know, I can't give you the answers, but I do really want to see you succeed.
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So feel free to ask questions as we go along.
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That solution looks pretty good.
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So how would you take that and turn it into code?
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I'm most comfortable in JavaScript, so I'll go ahead and use that for the implementation.
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First, we'll need a loop that iterates 100 times.
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As I'm writing this code, I'm not thinking about getting things done quickly, but rather I'm taking my time and making sure I fully understand the requirements before wasting my time writing a bunch of code that I'll have to correct later.
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What's really important is that I think out loud and explain my decisions throughout the process.
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Normally, I like to use for each for loops, but in this case, I'm going to use a traditional for loop and not for each, because I happen to know that 4 will result in better performance.
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Now, even if what I'm saying isn't totally correct, it's important for the interviewer to understand my problem-solving process.
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Saying something is almost always better than saying nothing at all.
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Unless, of course, you say some dumbass s**t, in which case it may be optimal to just shut the f**k up.
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Before you set foot into the Thunderdome, you should practice literally saying everything out loud as you solve a problem.
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Personally, I hate talking while I write code, and it just takes a lot of practice to get comfortable with this.
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Follow the ABC rule I just made up, which doesn't mean always be coding, but always be chatting.
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Another tip is that if you get confused and freeze up, don't just sit there, but try to come up with a question.
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The longer you sit there and stare at the headlights, the more likely you are to lose your composure.
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We can't have anyone freak out out there, okay?
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We've gotta keep our composure!
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We've come too far!
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There's too much to lose!
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much to lose!
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Keep our composure!
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I'm a little confused here, so I might ask a question like, should the program take an input and return an answer for a specific index, or should it always iterate over all 100 answers?
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Good question.
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A loop is just fine.
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Now I feel like I'm going in the right direction, so what I'll do next is create a few conditional statements that line up to what I sketched out on the whiteboard.
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Now the tricky thing about FizzBuzz is determining if one number is a multiple of another number.
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I guess I could divide by the target number, and if it's an integer, it's a match, but if it's a decimal, then it's not a match.
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That should work, so when it's 3 will log fizz, when it's 5 will log buzz, but if it's false on both of these, then we'll just console log the number.
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Yeah, I think that looks good.
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Let's go ahead and use bun to run it, just to show off my knowledge of blazingly fast JavaScript tooling.
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And yes, it works perfectly.
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I'm a goddamn genius.
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Interesting.
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What can you do without magical type conversion?
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Do you know what modulo is.
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Oh man, he's not impressed at all.
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I'm such a loser.
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Modulo?
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I've never even heard that word in my life.
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Oh wait, are you talking about the remainder operator in JavaScript?
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Yeah, you do have the modulo operator correct.
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Why don't you give it a try?
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Yeah, that would make more sense here.
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What it does is give us the remainder when doing division, so if that number is zero, then we know that it's a multiple of whatever number we're trying to divide by.
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That gives us a solution that isn't so dependent on the loosely typed nature of JavaScript.
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It's usually a good idea to avoid language-specific magic.
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The interviewer might be a C developer with 50 years of experience who's going to think your clever little JavaScript tricks are mid-AF.
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The modulo operator is available in basically every language, so it's best to stick with that.
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This is looking pretty good, but can you make FizzBuzz print on a single line?
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Oh yeah, that's kind of not correct, is it?
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Okay, I think I have an idea, but I remember reading this article that's messing with my head right now that said the else keyword is an anti-pattern.
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Maybe I should stop believing everything I read on the internet.
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Let's give it a try and talk through it.
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We'll We'll first check for the fizzBuzz condition, then use if-else a couple times to check for fizz and buzz.
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And then finally we'll use else to log the number itself.
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Not only does this put fizzBuzz on a single line, but the code is just more simple now.
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In fact, I don't think it can get any better.
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Oh, that looks correct.
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Now, what happened if I wanted to add some more conditions?
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Let's say 7 is BAS.
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How are you going to deal with that?
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Ah man, I knew it.
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L statements really are garbage.
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Always believe everything you read on the internet.
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It's never failed me.
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When you have a lot of conditions to check, one thing you generally want to do is try to extract the data out of that statement.
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We can easily do that here by defining a variable for the thing we want to print.
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Now we could set up a switch statement to check all the different conditions, but I think using IF is just as good if not better.
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As you can see here, I have GitHub Copilot enabled, but let's Just keep that on the down low because I really need this job.
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Now, instead of console logging here, we'll just mutate the variable.
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This allows us to eliminate the fizz buzz check and can also scale better if we decide to add additional words to it.
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Impressive.
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Very nice.
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Impressively very nice.
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Blazingly correct.
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Now, how would you describe the performance of your algorithm?
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I would describe it as strong to quite strong.
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As you can see when I run it, there's almost no lag time because my holistic approach is so blazingly fast.
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Well, that's one way to describe it.
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I was more talking about Big O time complexity.
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Oh yeah, I guess I should have studied Big O a little better before doing this interview.
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If the FizzBuzz game were to go on forever, I'd say we have linear time complexity, or O of N.
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However, technically, the game is only played for 100 steps, which would simplify down to O1, or constant time.
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Wow, I can't believe it's been an hour already.
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I blacked out.
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Where the hell am I?
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Is this heaven?
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Oh hey, congratulations, you've got the job.
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Here's your offer sheet with a $400,000 salary and the job is fully remote with unlimited vacation time.
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Your first task you'll be working on is changing all of the blue buttons to a slightly different color blue.
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Wow, I can't believe it.
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I've spent the last two years pouring my blood, sweat, and tears into this, and my mom is going to be so proud.
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Hold on just one second.
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Uh, it looks like we've just implemented a hiring freeze.
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Um, I'm gonna have to rescind that offer.
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Bruh!
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Congratulations, now you know how to bomb your technical interview just like me.
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Make sure to subscribe to the Primogen for more awesome developer content.
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Thanks for watching, and I will see you in the next one.
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Ngữ pháp & Biểu hiện trong bối cảnh
- Conditional statements: Cấu trúc như "if" (nếu) được sử dụng để mô tả các điều kiện trong vấn đề. Điều này giúp người nghe hiểu rõ cách tiếp cận vấn đề.
- Talking through problems: Việc diễn đạt suy nghĩ, như "let's just talk about the problem" (hãy chỉ nói về vấn đề) giúp loại bỏ căng thẳng và tạo không gian để giải quyết vấn đề một cách logic.
- Flowchart representation: Cách diễn đạt "I could represent this with a flowchart" (tôi có thể biểu diễn điều này bằng một biểu đồ dòng) không chỉ thể hiện khả năng phân tích mà còn khuyến khích việc sử dụng hình ảnh để giải thích.
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Cạm bẫy phát âm thường gặp
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