business correspondences 基本例句 外贸函电 The purpose of this course is to help you learn how to write good business letters cables telexes and faxes by using up-to-date expressions in the simplest possible language.本门课程的设立就是要教会同学们运用最简练而又最新奇的表达法来撰写和阅读一封标准的外贸函电。