Warning: file_put_contents(/www/wwwroot/ppbbu/www.30232.com/cache/3420d8b210a9f4ad13ed355624925b87.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/www.30232.com/index.php on line 55 key signature英英字典_key signature剑桥英语解释_key signature柯林斯英文解释_绍翊字体网有道词典
1. N a group of sharps or flats appearing at the beginning of each stave line to indicate the key in which a piece, section, etc, is to be performed 音调符号[music]