Clappet valve
[建] 止回阀
🧩 词语组成解析
[建] 止回阀
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
Is smoking allowed on the train?
火车上允许吸烟吗？
How is your family?
你的家人怎么样？
That's very late.Can the dentist see me now?
那就太晚了。牙科医生现在就不能给我看一下吗？