Bicuspid valve
二尖瓣
🧩 词语组成解析
n. 双尖齿\\na. 双尖的
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
By arranging with the public schools
首先， 从公立学校开始
I seldom write a letter.
我很少写信。
They were puzzled by several things.
有几件事情使他们感到迷惑不解。