prelude

前奏、序幕、先声常与 to 连用

The protests were a prelude to a much larger revolution.

那些抗议活动是一场更大规模革命的前奏。

前奏曲、序曲音乐

She opened the recital with a short piano prelude.

她以一首简短的钢琴前奏曲揭开独奏会的序幕。

成为⋯的前奏、拉开⋯的序幕正式

A week of heavy rain preluded the worst flooding in decades.

一周的大雨揭开了数十年来最严重水患的序幕。