Behring's serum
[医] 贝林格氏血清(白喉血清)
🧩 词语组成解析
serum
['sɪrəm]
n. <医>血清，血浆;浆液，树液;乳清;
🗣️ 情景例句
Well, thank you, Mr. Maxwell.
噢， 谢谢你， Maxwell先生。
How old do you have to be to vote in the national elections?
你要多大才能在大选中投票？
Where do you think you are? On a race track?
你认为你现在是在哪儿？在赛车道上吗？