DS

英 [diz]
  • n.英语字母表的第 4 个字母
  • abbr.民主党人;民主党的
  • 网络取代度(degree of substitution);直接序列(Direct Sequence);唐氏综合征(Down syndrome)

DSDS

DS

1.英语字母表的第 4 个字母the fourth letter of the English alphabet

3.(学业成绩)第四等,差the fourth highest mark/grade that a student can get for a piece of work, showing that it is not very good

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