对这些规则有少数例外，有时在一个倚音或不谐和音后面标一个渐强记号；
There are few exceptions to this rule , and sometimes a crescendo is marked after an appoggiatura or dissonance ;
不和谐的装饰音，极为普遍的是倚音，是与节拍同步的；
Dissonant grace notes , the most common of which are appoggiaturas , are played on the beat ;
倚音倚音倚音