Pgi
[医][=(serum)pepsinogen i]（血浆）胃蛋白酶元？（放免测定）
🗣️ 情景例句
The old couple has already been married for fifty years.
那对老夫妻结婚已经 50 年了。
Let your yea be yea and your nay be nay.
是就是，非就非。
Which seasons do you like best?
你最喜欢哪些季节？