closed book的意思|示意
n. 已结束的计划和行动等；一无所知的东西
closed book相关短语
1、 closed-book exam 闭卷,闭卷考试
2、 A Closed Book 合上的书,高深莫测的事物,未揭开的秘密,不理解的事
3、 closed-book 关闭书,难理解的事
4、 read closed book 揭开秘密
5、 like a closed book 被迫有趣
6、 to be a closed book 意指无法明了的事
7、 closed-book test 不可看书的考试