Eustachian valves
[医] 下腔静脉瓣
🧩 词语组成解析
[医] 咽鼓管
n. 阀门；真空管；瓣膜（valve的复数）
🗣️ 情景例句
He knows everything about the production schedule,
他知道生产进度的一切情况，
I want you to work for yourself, and for the well-being fo the society.
我认为你们应为自己工作，为这个社会的幸福而工作。
My teacher never spoke English like that! The porter and I looked at each other and smiled.
我的老师从来不那样讲英语！我和搬运工相视一笑。