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任何可以使力放大的工具都可称为机械。你所使用的大多数机械都很简单,以至于你可能都没有意识到它们是机械。门把手、铁锤、开罐头器和车轮都可算是机械。
Anything that can magnify a force can be called a mechanic. Most of the machines you use are so simple that you may not realize they are mechanical. Doors, hammers, can openers and wheels are machines.