So when you say it's an all-metal case and thin, well guess what?

所以如果你说这是一款全金属外壳、而且很薄的笔记本电脑，那么你会想到什么？

youdao

There's something called a trench box - a metal case that holds back the sides of the walls - to be used to stop them caving in when you dig deeper than 5ft.

有一种叫做沟槽支撑的东西——一种用于挡住沟壁的金属箱体——挖土超过五英尺约1.5米时，用它来防止塌方。

youdao

There's something called a trench box-a metal case that holds back the sides of the walls-used to stop the walls from 5 caving in when you dig deeper than 5ft.

有一种叫做沟槽的东西——一种用来阻止两面沟壁往下坍塌的金属容器——当你挖土超过5英尺(约1.52米)深时，用它来防止沟壁坍塌。

youdao

The brushed metal case with protective layer provides 9H scratch resistance, which prevents damage even after long-term use.

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Unlike in previous models, the battery of the MacBook Pro with Retina Display is glued to its metal case.

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High-definition artwork is baked on metal case at 350 degrees Fahrenheit then covered with a durable anti-scratch layer for protection and shine.

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