Ppps
[医][=polyvalent pneumococcal polysaccharide]多价肺炎双球菌多糖
🗣️ 情景例句
I must have see you somewhere before.
我一定在哪里见过你。
A wilful fault has no excuse and deserves no pardon.
不能宽恕故意犯下的错误。
He added that a student had dressed up as a policeman and was playing all sorts of silly jokes on people.
还对工人说，有个学生常装扮成警察无聊地同别人开玩笑。