序曲的英文：
sinfonia

Listen to the introduction!
快听这首序曲！

Of or serving as a prelude;introductory.
序曲的，序言的序幕(曲)的或作为序曲的;介绍性的

The overture to an oratorio,opera,or act of an opera.
序曲圣乐、歌剧或一幕歌剧的序曲

The prelude to the musical composition is very long.
这首乐曲的序曲很长。

To introduce with or as if with a prelude.
开头用或似乎用序曲来引入

The opera was preceded by a short overture.
这部歌剧开始前有一简短的序曲。

The audiences must be in their seats before the overture.
观众务必于序曲演奏前入座。

They played the overture at a fairly slow tempo.
他们用相当缓慢的速度演奏那首序曲。

Meanwhile the conductor lifted his violin bow and the orchestra attacked the overture
这时，乐队指挥把小提琴的弓子一举，乐队就奏起序曲来。

"and his "" 1812"" overture are now considered warhorses."
他的序曲