Pgi
[医][=(serum)pepsinogen i]（血浆）胃蛋白酶元？（放免测定）
🗣️ 情景例句
and for meeting Harry and Michelle.
和认识了Harry和Michelle。
I'm receiving guests downstairs.
我在楼下接见客人。
Which books did you buy?
您买的是两本什么书？