Mercier's valve
[医] 梅尔西埃氏瓣(输尿管襞)
🧩 词语组成解析
valve
[vælv]
n. 阀;真空管;（管乐器的）活栓;（心脏的）瓣膜;
vt. 装阀于;以活门调节;
🗣️ 情景例句
One tiny little touchdown, with just three minutes to play.
一次小小的达阵得分 只剩下三分钟了。
It isn't much.
这是微不足道的。
Competition between ourselves, person against person, community against community,
然而人类之间的竞争，人与人，团体与团体，