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
They took everything I had.
他们拿走了我的一切。
There is a black sheep in every flock.
群群羊中有黑羊。
Are there any boats in the picture?
画里面有船吗？