n.介绍；引言，导言；采用，引进；新采用的东西 变形： 复数：introductions 双语释义：n.(名词)[C][U]介绍,引见 formal presentation of one person to another, in which each is told the other's name[C]引言,导论 sth that leads up to the main part of sth[U]引进,传入; 采用 bringing into use or operation[C]新采用的东西