Nbcs
[医][=newborn calf serum]新生牛血清
🗣️ 情景例句
What did you do?
那你们怎么办呢？
Thanks very much. It was a great party!
非常感谢。这次聚会好极了。
It was usually very quiet, and he could see the park from his window.
那儿通常很安静，从他的窗户他可以看见公园。