Clack valve
止回阀
🧩 词语组成解析
clack
[[klæk]]
v. 噼啪响\\nn. 噼啪响
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
I hope I can repay you for it.
我希望能报答你。
He was anxious about his son's safety.
他担心他儿子的安全。
But we still have a problem.
不过我们还是有问题呀。