He knows something about the boss, which is his ace in the hole.
他对老板有所了解，这是他的王牌。
He knows something about Earth's future.
他知道一些关于地球未来的事。
Child as he is, he knows something of electricity.
虽然还是个小孩，但他知道一些电的知识。
Child as he is, he knows something of electricity.
虽然他还是个孩子，却懂得一些电学知识。
He knows something about Beijing. I think he must have been there.
他对北京有所了解，我想他一定去过那儿。
Once a person knows something more, he is not happy.
一个人一旦知道的东西多了，就不快乐了。
He knows that something is on his own nose.
他知道自己的鼻子上有东西。
Every artist knows in his heart that he is saying something to the public.
每位艺术家心里都明白，他要向公众表达某种信息。
He knows he has to do something about his problem.
他知道自己必须采取行动解决这个问题。
He knows he has to do something about his problem.
他知道自己必须采取行动解决这个问题。
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