交易: business; deal; trade; transaction; sales transaction 短语和例子肮脏的政治交易 a dirty political deal; 黑市交易 black market colloidal powder; bargain; 决不拿原则做交易 never barter away principles; 赊帐交易 credit t
频: Ⅰ形容词(次数多) frequent 短语和例子这儿春季雨很频。 rains are frequent here in spring.Ⅱ副词(屡次) frequently; repeatedly 短语和例子捷报频传。 reports of new victories keep pouring in.Ⅲ名词1.[物理学] (物体每秒钟振动的次数) frequency 短语和例
