Vena umbilicalis
[医]脐静脉
🧩 词语组成解析
n. 静脉\\n[医] 静脉
🗣️ 情景例句
I'm not doing anything.
我没有要做什么。
The contract will be sent to you by air mail for your signature.
合同会航邮给你们签字。
I'm very sorry. I borrowed a book from the library two weeks ago.
“很对不起。两周前我从图书馆借了一本书。