Calcium serum
[医] 血清钙
🧩 词语组成解析
serum
['sɪrəm]
n. <医>血清，血浆;浆液，树液;乳清;
🗣️ 情景例句
No, no. But I do have very close friends in New York City.
没有。我在纽约有很要好的朋友。
If you want the trunk, look in the attic.
如果你要箱子，就在阁楼上。
What do you teach?
你教什么呢？