Ppps
[医][=polyvalent pneumococcal polysaccharide]多价肺炎双球菌多糖
🗣️ 情景例句
Spring has sprung and all the flowers are blooming.
春天来了。花儿都开了。
I invited him to come in, but he wouldn't.
我请他进来，但是他不肯。
the ongoing signatures of infinity.
无限的一种不间断的标志。