Ppps
[医][=polyvalent pneumococcal polysaccharide]多价肺炎双球菌多糖
🗣️ 情景例句
Good-bye, and thanks for bringing Gemma in.
再见，谢谢你们把Gemma送来。
Self-distrust is the cause of most of our failure.
我们的失败多数是由于缺乏自信。
After I had stacked my shirts and underclothes in two empty drawers,
我将衬衫、内衣放进两个空抽屉里，