Allantoic veins
[医] 尿囊静脉, 脐静脉
🧩 词语组成解析
a. [动]尿囊的,尿囊内的,有尿囊的
n. 纹理；静脉（vein的复数）
🗣️ 情景例句
Five.
5号。
They who cannot do as they would,must do as they can.
不能如愿而行，也须尽力而为。
The only other people who knew the secret were Joe and Bob.
除此之外，只有乔与鲍知道这个秘密。