Serum protection test
[医] 血清保护试验(检微生物及其毒力)
🧩 词语组成解析
serum
['sɪrəm]
n. <医>血清，血浆;浆液，树液;乳清;
🗣️ 情景例句
How do you spend your leisure time?
你是怎样打发业余时间的？
No. I was planning to stay home.
不，我打算呆在家里。
He told him he had better return it or he would call the police.
告诉他最好把羊交还，否则就去叫警察。