例句
1、Fishing is a closed book to me.
我对钓鱼是一窍不通。
2、The actress' life is a closed book to us.
那个女演员的生活对我们来说是个秘密。
3、The rest of the members are very friendly but Helen is very much a closed book.
其他人都很好，唯有海伦简直让人费解。
4、That is a good book which is opened with expectation and closed with profit.--L.W.Akott
好书使人开卷有所求，闭卷有所获。－－奥尔科特

5、As far as I'm concerned the accident is a closed book; I just want to forget it.
就我而言，这事件已过去了，我只想忘掉它。
6、The exam will be closed-book with no notes allowed.
考试将是闭卷考试、不允许携带小抄。
7、One chapter closes, but the book is not closed.
一章结束，但这本书还未结束。
8、That is a good book which is opened with expectation and closed with profit.
好书开卷引人入胜,闭卷使人获益.