preamble
Word family adjectivepreambularynounpreambleverbpreambulate
pre·am·ble /priˈæmbəl $ ˈpriːæmbəl/ noun [countableC, uncountableU] formalBEGINNING a statement at the beginning of a book, document, or talk, explaining what it is about 〔书、文件、讲话的〕前言,序言;开场白preamble to the preamble to the American Constitution 《美国宪法》序言
Harding gave him the news without preamble (=without saying anything else before it). 哈丁开门见山把消息告诉了他。
Origin preamble (1300-1400) French préambule, from Late Latin praeambulus “walking in front”