| [/diː; di/] n (pl D's, d's [/diːz; diz/]) 用法:
1 the fourth letter of the English alphabet 英语字母表的第四个字母:
`David' begins and ends with a `D'/D. David一字的开头和结尾都是D. 用法:
2 D (music 音) the second note in the scale of C major C大调音阶中的第二音或音符. 用法:
3 D academic mark indicating a low standard of work 学业成绩为低等的评价符号. |