preamble [priˈæmbl]

以下由轻松背单词网站提供

n.前言；序文

an introduction to a speech or piece of writing

He spoke without preamble. 他没有开场白地讲起来。
The controversy has arisen over the text of the preamble to the unification treaty. 针对统一条约的序文出现了争论。