A kind of easy measuring tool for big gear is introduced.
介绍一种测量大齿轮的简易工具。
If the big gear did not engage with the small one, the machine would refuse to work.
如果大齿轮与小齿轮不相啮合的话,机器就不会工作。
If I see a bunch of sick people, maybe a big infection is around, and I better kick my immune system into high gear.
如果我看到一群病患,这里有可能有传染病,那么我最好把自己的免疫系统再开高一个档。
If I see a bunch of sick people, maybe a big infection is around, and I better kick my immune system into high gear.
如果我看到一群病患,这里有可能有传染病,那么我最好把自己的免疫系统再开高一个档。
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