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
Tell me.
告诉我吧。
I have some difficulty in expressing myself.
我表达起来有点困难。
Is this box big? No, it's small.
不，是小的。