Eternod's sinus
[医] 埃特诺氏窦(绒膜与卵黄囊之间的血管袢)
🧩 词语组成解析
n. 窦, 静脉窦, 凹陷处
🗣️ 情景例句
What classes are mandatory for your major?
你的专业什么课是必修的？
He who makes himself a dove is eaten by the hawk.
弱肉强食。
Mom, can't Lily do it? It's her turn!
妈妈，莉莉就不能做吗？轮到她了！