音標發(fā)音英式音標 [si??ef]美式音標 [si??ef]英式發(fā)音 美式發(fā)音 基本解釋abbr.成本加運費(=Cost and freight)abbr.比較(=compare)同根派生 cf.相關詞英英字典劍橋英英字典 used in writing when you want the reader to make a comparison between the subject being discussed and something elsecf.劍橋字典cf.柯林斯字典