短语词组短語be an open book 率直的人an open book exam 開卷考試talk like an open book 毫不隱瞞地講話i am an open book 我是一本打開的書to be an open book 意指一目了然的事An open -book exam 開卷考試i 'm an open book 我知無不言I 'm an open book instead 然而我已覆水難收 返回 an open book