Monovalent sera
[医] 单价血清
🧩 词语组成解析
a. 单价的\\n[医] 一价的, 单价的
浆液, 血清\\n[医] 血清; 浆液
🗣️ 情景例句
I was very sad indeed to hear about it.
听了这件事，我的确非常难过。
You can't make bricks without straw.
没有稻草，制砖难搞。
Yes, it's Bob here. Can you ask him to call me back?
可以，我是鲍勃。你能请他给我回个电话吗？