simple machines翻译
simple machines的基本解释
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[机] 简单机械
例句
Levers and pulleys are simple machines.杠杆和滑轮是简单机械。Tolls are simple machines. We use them to do work.工具是简易机械。我们用它们来干活。
Sometimes many simple machines are put together to make one complicated machine.有时许多简单的使是合起来统一在参加复杂的机器尺寸上。
短语
Using simple machines 简单机械simple machines and Tools 简单机械和刀具
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