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
Thanks, Son.
谢谢你， 孩子。
Last month was December,wasn't it ?
上个月是十二月，对不对？
That's always the case.
习以为常了。