Signature tune
n. 音調
?? 牛津釋義
signature tune
(also theme tune), usu brief tune used to introduce a particular broadcast or performer 信號曲, 開始曲（通常為短曲, 用於一廣播前或演出者出場前）.
?? 詞語組成解析
tune
[tun]
n. 曲調，曲子;和諧，調諧;語調;心情;
vt. 調整;使和諧，使一致;調整（頻率）;為…調音;
vi. 協調;[無線]調諧;
??? 情景例句
I think we'd better head home.
我想我們最好上路回家啦。
Do you often study history on Saturday?
你常常在星期六學歷史嗎？
Now the manager has found that things are missing.
現在，經理已發現有東西丟失。