He has always been a bit of a closed book. He never talks about his personal life, especially the bad times.

他一直有点封闭。他从来不谈个人生活，特别是那些糟糕的日子。

Chemistry is a closed book to me.

【book】我对化学一窍不通。

Mathematics has always been a closed book to me.

【closed】我对数学一向是一窍不通。

He's a closed book, all right. But he wasn't always like that.

他的确是个封闭的人 但是他以前不是这样的。

On the wedding night... it is very important to recognize that the couple... must communicate their desires... and to understand that you cannot read a closed book.

新婚之夜.新人要意识到.沟通的重要性。书不打开是读不了的。

A confederate who foresees your conclusions and course of action is always dangerous, but one to whom each development comes as a perpetual surprise, and to whom the future is always a closed book, is indeed an ideal helpmate.

他以谦虚的态度很少关注这一点。 一个预见到你的结论和行动方针的同盟者总是危险的， 但对他来说， 每一个发展都是永远的惊喜， 对他来说，未来总是一本合上的书， 这确实是一个理想的帮手。