柯林斯英汉双解大词典
simple machine
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1.
N a simple device for altering the magnitude or direction of a force. The six basic types are the lever, wheel and axle, pulley, screw, wedge, and inclined plane 简单机械
双语例句原声例句权威例句
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Levers and pulleys are simple machines.
杠杆和滑轮是简单机械。
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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。
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It's easy to see why you might think that sort of thing when you stick to simple machines.
你对于简单机器抱有这种想法，是很自然的事。
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It's easy to see why you might think that sort of thing when you stick to simple machines.
你对于简单机器抱有这种想法,是很自然的事
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