It's a difficult piece to play, full of sharps and flats.

这支乐曲不好演奏，到处是升半音、降半音。

There are no sharps or flats in the key of C major.

C大调中没有升半音和降半音。

You can also choose if you want to be tested on sharps and flats.

你也可以选择，如果你想被利器和单位进行测试。

The backing can be discarded because it no longer contains any sharps.

衬垫因为不包含任何尖利物，可以丢弃。

Sharps or flats next to individual notes only apply within the measure.

高音或低音符号只能在相近的小节内使用。