跟读练习: How 3D Printing Is Transforming The Auto Industry - 通过视频学习英语口语

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28 句
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3D printing.
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It's a technology that's been around for decades, but is now increasingly being used by automakers to cut costs and save time.
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Both the technology and the business cases have gotten stronger, enough to start installing machines in auto factories.
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Automakers like Ford and Rivian are using 3D printing for prototypes, specialized tools, and even replacement parts.
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Also known as additive manufacturing 3d printing builds an object from
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a digital design adding material layer by layer depending on the machine
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that material can be plastic ceramic or even something harder like metal
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or carbon fiber composite rivian says
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it has spent more than five million dollars on these types of machines materials for the operations
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now cost about 1 .7 million per year
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At the company's
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Michigan Research and Development Center, smaller printers sit alongside industrial machines that can cost hundreds of thousands of dollars.
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They make prototypes for design and testing, including electric motors, steering wheels, and other interior parts.
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Rivian told CNBC the machines typically pay for themselves within a year just by saving on supplier tooling and logistics, and of course, time saved.
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It's a similar story at Ford.
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The company has increasingly used 3D printing as its factories.
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At the River Rouge plant, where the automaker builds its crucial F -150 pickup truck, about two dozen printers produce thousands of tools,
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including hood holders, torque bit sockets, and tools for smoothing adhesive.
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When one of Ford's plants needed a large machining wheel to keep its operations going,
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the company printed a temporary replacement while it waited for the production and delivery from a supplier.
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Mercedes -Benz, Toyota and even EV startup
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Slate also use 3D printing in their operations as well.
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General Motors has even started using 3D printed parts for some
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of its low -volume Cadillac vehicles such as a medallion on
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a manual gear shifter marking the technology's growth from prototyping to production parts.
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Executives believe the future for 3D printing like the parts
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they build is limitless as machines continue to come down in cost and efficiency increases.
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This is a production of WGBH.

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本课的词汇与口语要点

这节口语课以视频“How 3D Printing Is Transforming The Auto Industry”为素材。 视频中反复出现的词有：printing, machine, parts, cost, automaker。 这段视频共有 28 个句子、350 个单词可供跟读。 讲话部分时长为 2:27。 说话人语速平稳，每分钟约 143 个词，很适合跟读。 只有 71% 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
prototype 名词/ˈpɹəʊtətaɪp/原型, 雏形
layer 名词/ˈleɪ̯ɚ/層 /层
printer 名词/ˈpɹɪntɚ/印刷者
supplier 名词/səˈplaɪə/供應商 /供应商, 供應者 /供应者
temporary 形容词/ˈtɛmp(əˌɹ)ɛɹi/暫時 /暂时
alongside/əˌlɔŋˈsaɪd/旁邊 /旁边
smooth 形容词/smuːð/平穩 /平稳, 順利 /顺利
efficiency 名词/ɪˈfɪʃ.ən.si/效率, 效能
manual 名词/ˈmæn.j(u)əl/手冊 /手册
crucial 形容词/ˈkɹuː.ʃəl/關鍵的 /关键的, 決定性的 /决定性的
hood 名词/hʊd/風帽 /风帽
depend 动词/dɪˈpɛnd/信任, 信賴 /信赖
install 动词/ɪnˈstɔl/安裝 /安装
logistics 名词/ləˈd͡ʒɪstɪks/物流, 運籌 /运筹
pickup 名词/ˈpɪkʌp/拾音器

需要注意的发音

  • “sh” 和 “zh” 音: efficiency /ɪˈfɪʃ.ən.si/, crucial /ˈkɹuː.ʃəl/, specialize /ˈspɛʃəˌlaɪz/
  • 长单词——注意重音位置: temporary /ˈtɛmp(əˌɹ)ɛɹi/, efficiency /ɪˈfɪʃ.ən.si/

中文母语者容易读错的音：

  • /v/ — 不要读成 /w/，上齿轻触下唇: additive /ˈæd.ɪ.tɪv/, adhesive /ədˈhiː.sɪv/
  • 词尾辅音 — 要读清楚，后面不要加元音: prototype /ˈpɹəʊtətaɪp/, replacement /ɹɪˈpleɪsmənt/, alongside /əˌlɔŋˈsaɪd/, hood /hʊd/, depend /dɪˈpɛnd/
  • /r/ 和 /l/ 的区别: replacement /ɹɪˈpleɪsmənt/, crucial /ˈkɹuː.ʃəl/

如何用这段视频练习

  1. 先完整听一遍视频，不要开口，记下不认识的单词。
  2. 用正常速度逐句跟读，每句重复到你的节奏与说话人一致为止。
  3. 录下自己的声音并与原声对比，特别注意 prototype, layer, printer 这类单词。

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。

影子跟读法: 阅读完整分步指南 →