Ball's valve
[医] 鲍尔氏瓣, 莫尔加尼氏瓣
🧩 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
Oh, here he comes.
噢，他来了。
Could you tell me where is the ticket office?
你能不能告诉我售票处在哪里？
But this was before Annie Sullivan came to stay.
但是，这都是安妮·莎利文来住下之前的事了。