Prelude
01
前奏, 序幕
a thing that comes before and introduces a more important event or action
例子
The brief meeting was just a prelude to the more serious negotiations that followed.
简短的会议只是随后更严肃谈判的序幕。
02
前奏
a short section of a musical performance such as a fugue, opera, suite, etc. that introduces the main theme or subject
