Serum sickness
[医] 血清病
🧩 词语组成解析
serum
['sɪrəm]
n. <医>血清，血浆;浆液，树液;乳清;
🗣️ 情景例句
OK.
好。
He can't decide what to do.
他不能决定做什么。
There are a lot of people in the swimming pool.
游泳池里挤满了人。