音標發(fā)音英式音標 [???.p?n ?b?k]美式音標 [?o?.p?n ?b?k]英式發(fā)音 美式發(fā)音 同根派生 open book相關詞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劍橋字典open book柯林斯字典