'd

美 [di:]英 [di:]
  • na.同“should”;同“had”;同“did”;同“-ed”

'd'd

'd

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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