单词：preambles
音标：[ˈpri:ˌæmbəlz] ；
n. 序( preamble的复数形式 ); 绪言; （法令、文件等的）序文; 前言
n. a preliminary introduction to a statute or constitution (usually explaining its purpose)
v. make a preliminary introduction, usually to a formal document
v. make a preliminary introduction, usually to a formal document