音标发音英式音标 [ˌəʊ.pən ˈbʊk]美式音标 [ˌoʊ.pən ˈbʊk]英式发音 美式发音 同根派生 open book相关词英英字典劍橋英英字典 If someone is an open book, it is easy to know what they are thinking and feeling.open book剑桥字典open book柯林斯字典