key signature
US /ˈkiː ˌsɪɡ.nə.tʃər/
UK /ˈkiː ˌsɪɡ.nə.tʃər/

名词
1.
调号, 调性符号
any of several combinations of sharps or flats on a musical staff at the beginning of a composition, indicating the key in which the composition is written
示例:
•
The pianist checked the key signature before starting the piece.
钢琴家在开始演奏前检查了调号。
•
Changing the key signature alters the pitch of many notes.
改变调号会改变许多音符的音高。
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