Pgi
[医][=(serum)pepsinogen i]（血浆）胃蛋白酶元？（放免测定）
🗣️ 情景例句
Some people seem too think its for practicing grammar rules and learning lists of words.
一些人认为它是用来操练语法规则和学习一大堆单词。
What's your opinion?
你的意见是什么？
Shrugging my shoulders, I began to walk away when,
我耸耸肩膀掉头走开了。