Semilunar valve
半月瓣
🧩 词语组成解析
a. 半月形的\\n[医] 半月形的
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
Please help me to get things straight.
请帮助我把事情搞好。
It's a small world.
世界真小！
I was angry because they were late.
我生气，因为他们迟了。