P. p. d.
[医] 精制蛋白衍化物(结核菌素)
🗣️ 情景例句
I had the appointment written on my calendar and was looking forward to the occasion.
我早已把这个约会写在我的日历上而且一直期待着这一时刻。
Yes,I have both your hat and your coat.
不，你的帽子和大衣都在我这里。
The busmen have stated that the strike will continue until general agreement is reached about pay and working conditions.
司机们声称此次罢工将一直持续到就工资和工作条件问题达成全面协议的时候为止。