Eustachian valves
[醫] 下腔靜脈瓣
?? 詞語組成解析
[醫] 咽鼓管
n. 閥門；真空管；瓣膜（valve的復數）
??? 情景例句
You lost by a very small number of votes.
輸的票數非常少。
It's most valuable.
這最有價值。
That's OK!
沒關系。