We must always go into the whys and wherefores of anything.
我们对任何事情都要问一个为什么。
We must always go into the whys and wherefores of anything.
我们对任何事情都要问一个为什么。
the whys and wherefores of these procedures need to be explained to students.
要办这手
的缘
都必须一一解释给
生听。
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