Annulus umbilicalis
[医] 脐环
🧩 词语组成解析
n. 环, 环形物, 体环\\n[化] 环形缝; 环隙
🗣️ 情景例句
What year are you?
你是哪一级的？
Seeing is believing.
眼见为实。
I'm sorry, but we have a problem here.
对不起，我们有困难。