Active serum
[医] 活性血清(含补体的血清)
🧩 词语组成解析
active
['æktiv]
adj. 积极的，活跃的，有生气的;迅速的，敏捷的;有效的，起作用的;
n. [语法]主动语态;积极分子，活跃的人;
serum
['sɪrəm]
n. <医>血清，血浆;浆液，树液;乳清;
🗣️ 情景例句
I don't know. It's locked.
不知道， 锁着呢。
His heart cannot be pure whose tongue is not clear.
嘴不净者心不纯。
'I'm very sorry,' he said.
“实在抱歉，”他说，