- 第号
- d: CD = 400. DC = 600.
- no: no. =number.
- 'd: 〔口语〕 1.= had: I'd ... = I had .... 2.= did: Where'd ... = Where did .... 3.= should (或 would): He'd ... = He should (或 would). 4.=-ed: foster'd.
- a and d: 入院和出院
- a d: disk]重折光盘; 放弃的; 是一组对立项; 重折光盘,暗带
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