There are three main laws of mechanics, or three laws of Newton.

力学有三大定律，即牛顿三大定律。

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Once when Newton was standing on seashore, one of his friends praised him for his world-renowned laws of mechanics and other inventions.

一次，当牛顿正站正在海滩沙卤，一名朋友便果天下着名的牛顿力教定律战别的一些收现创做收现而歌颂他。

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