跟读练习: Rust in 100 Seconds - 通过视频学习英语口语
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Rust, a memory-safe compiled programming language that delivers high-level simplicity with low-level performance.
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It's a popular choice for building systems where performance is absolutely critical, like game engines, databases, or operating systems,
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and is an excellent choice when targeting WebAssembly.
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It started as a side project of Gradon Whore in 2007, who named it after the Rust fungus.
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It was sponsored by Mozilla in 2009, and has been ranked the most loved programming language every year since 2016, with its fans being known as Rustations.
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Traditionally, high-level languages provide a garbage collector to nerf your control over memory management,
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while lower-level languages provide functions like Free and Allocate to shoot yourself in the foot.
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Rust takes a different approach.
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It has no garbage collector, but achieves memory safety with a concept known as ownership and borrowing.
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By default, every variable in Rust is immutable.
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This allows values to be used in the stack memory, which has minimal performance overhead.
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However, mutable values or objects with an unknown size at compile time are stored in the heap memory.
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Every value in a Rust program is assigned to a single variable known as its owner.
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When that variable goes out of scope, the memory allocated to it is dropped automatically.
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In some cases though, you may want to pass a reference to a different part of the program.
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Borrowing allows you to access a reference in memory without taking ownership of it.
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There are a ton of rules to go along with this system that the Rust BorrowChecker will validate at compile time.
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These rules keep your code safe while providing absolute control over performance.
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Rust also has a package manager called Cargo, where each individual package is a crate.
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To get started, install Rust, then run Cargo New from the command line.
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In the main.rs file, you'll find a main function, which is where the program will start executing.
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Declare a variable with let, followed by its name and type.
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The value can't be changed or reassigned by default, so add mutt to make it mutable.
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The name of the variable is the owner.
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A reference to its location in memory can be borrowed by other parts of the program by prefixing it with an ampersand.
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Then use a macro like println to log the value to the standard output.
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Rust also comes with a standard library that contains modules to handle I.O., the file system, concurrency, among many other things.
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Now compile your code to an executable with the Rust compiler.
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You just built a memory-safe executable that can handle the most performance-intensive system requirements.
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This has been Rust in 100 seconds.
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Hit the like button and subscribe if you want to see more short videos like this, and leave a comment if you want to see a full Rust tutorial.
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Thanks for watching, and I will see you in the next one.
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本课的词汇与口语要点
这段视频共有 32 个句子、488 个单词可供跟读。 讲话部分时长为 2:27。 说话人语速较快，每分钟约 199 个词，会出现较多连读和弱读。 只有 76% 的单词属于英语最常用的 3,000 词，词汇难度较高。
视频中的重点词汇
视频中 15 个值得学习的单词，附发音和释义：
| 单词 | 发音 | 释义 |
|---|---|---|
| package 名词 | /ˈpæk.ɪd͡ʒ/ | 包裹, 包 |
| ownership 名词 | /ˈoʊnɚʃɪp/ | 所有權 /所有权 |
| default 名词 | /dɪˈfɔlt/ | 違約 /违约, 暴雷 |
| garbage 名词 | /ˈɡɑɹ.bɪd͡ʒ/ | 垃圾, 廢物 /废物 |
| collector 名词 | /kəˈlɛk.tɚ/ | 收藏家, 收債人 /收债人 |
| output 名词 | /ˈaʊtpʊt/ | 輸出 /输出 |
| database 名词 | /ˈdeɪtəˌbeɪs/ | 數據庫 /数据库 |
| requirement 名词 | /ɹɪˈkwaɪɹmənt/ | 要求, 需求 |
| scope 名词 | /skəʊp/ | 範圍 /范围 |
| install 动词 | /ɪnˈstɔl/ | 安裝 /安装 |
| declare 动词 | /dɪˈklɛɚ/ | 宣布 |
| stack 名词 | /stæk/ | 堆 |
| sponsor 名词 | /ˈspɒn.səː/ | 保證人 /保证人 |
| subscribe 动词 | /səbˈskɹaɪb/ | 簽署 /签署 |
| borrow 动词 | /ˈbɑɹ.oʊ/ | 借, 貸 /贷 |
需要注意的发音
- “sh” 和 “zh” 音: ownership /ˈoʊnɚʃɪp/, traditionally /tɹəˈdɪʃ.ə.nə.li/
- 长单词——注意重音位置: traditionally /tɹəˈdɪʃ.ə.nə.li/, simplicity /sɪmˈplɪsɪti/, executable /ˈɛksəkjutəbl/, concurrency /kəŋˈkʌɹənsi/, macroeconomics /ˌmæk.ɹoʊˌiː.kəˈnɒ.mɪks/
如何用这段视频练习
- 先完整听一遍视频，不要开口，记下不认识的单词。
- 先用 0.75 倍速逐句跟读，熟练之后再回到正常速度。
- 录下自己的声音并与原声对比，特别注意 package, ownership, default 这类单词。
视频中的语法
说话人最常用的结构，并附上视频中的原话：
| 结构 | 视频中的用法 |
|---|---|
| 被动语态 be + 过去分词 — 强调发生了什么，而不是谁做的 | was sponsored · are stored · is assigned |
| 现在完成时 have/has + 过去分词 — 过去发生但与现在仍有关联的事 | has been ranked · has been |
| 定语从句 who / which + 从句 — 补充说明人或事物 | memory, which has · function, which is |
什么是跟读法？
跟读法 (Shadowing) 是一种有科学依据的语言学习技巧，最初开发用于专业口译员的培训，并由多语言者Alexander Arguelles博士普及。这个方法简单而强大：您在听英语母语原声的同时立即大声重复——就像是一个延迟1-2秒紧跟说话者的影子。与被动听力或语法练习不同，跟读法强迫您的大脑和口腔肌肉同时处理并模仿真实的讲话模式。研究表明它能显着提高发音准确性，语调，节奏，连读，听力理解和口语流利度——使其成为雅思口语备考和真实英语交流最有效的方法之一。