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
Make sure everybody is at that meeting.
要确定每一位都出席这次会议。
The news of Tom's death filled us with grief.
汤姆的噩耗，使得我们满怀悲伤。
This is not easy, and may require two porpoises working together.
这并非易事，可能需要两只海豚合伙干才行。