您要查找的是不是：
- 降C大调。C flat major.
- 降C调C flat
- 降C调。C flat.
- 降C小调。C flat minor.
- D音，D调C大调音阶的第二个音或C小调音阶中的第四个音The second tone in the scale of C major or the fourth tone in the relative minor scale.
- 降to drop
- 从C大调转入到A小调to modulate from C major to A minor
- 大调major
- 降序descending order
- C大调音阶the scale of C major
- c语言
- 降噪denoise
- 降下lower
- 降至reduce ... to ...
- 维生素Cvitamin(e) C
- C调主音C大调音阶中的第一个音或C小调音阶中的第三个音The first tone in the scale of C major or the third tone in the relative minor scale.
- 压降voltage drop
- 降到drop to
- C语言程序设计Programming in C
- 降薪cuts in salaries
