key signature 的英语意思
key signatureˈkey ˌsignature noun [countable] 
查看全部语言翻译 a set of marks at the beginning of a line of written music to show which key it is in写在乐谱每行开头的一组符号，用以标示该乐曲所在的调
查看全部语言翻译 a set of marks at the beginning of a line of written music to show which key it is in写在乐谱每行开头的一组符号，用以标示该乐曲所在的调