Theme song
主题歌, 信号曲, 套话
📖 牛津释义
theme song
(also `theme tune),
(a) melody that is often repeated in a musical play, film, etc （音乐剧、电影等中的）主题曲, 主题歌.
(b) = signature tune (signature).
🧩 词语组成解析
theme
[θim]
n. [乐]主题;主旋律;题目，话题;（学生的）作文;
adj. 以奇想主题布置的;
song
[sɔŋ]
n. 歌曲;歌唱（艺术）;诗歌，韵文;鸟叫声，鸟语;
🗣️ 情景例句
Yes.
是的。
It's a long way from here.
它离这里很远。
Why does aperson standing in a bus or train tend to fall when a sudden start is made?
一个人站在公共汽车或火车上，当车突然开动时，他为什么会倾倒呢？