Pgi
[医][=(serum)pepsinogen i](血浆)胃蛋白酶元?(放免测定)
🗣️ 情景例句
Sam, this is Susan. Sam
我是Susan。
What is happening up there?
上面发生什么事情?
What is needed in the case of noise is a study of large numbers of people living under noisy conditions,
对于噪音问题,需要对大量生活在噪音中的人进行研究,
更多情景英语 ›