He taught me a lot of things without any purpose and motivation.
他教会我很多东西没有任何目的和动机。
Reproduced here only share the learning, without any commercial purpose!
此处只做学习分享所用，无任何商业用途！
He sometimes just opened the book at random, without any definite purpose.
有时他只是毫无目的地随意翻开书本。
He sometimes just opened the book at random, without any definite purpose.
有时他只是毫无目的地随意翻开书本。
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