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 need some.
我确实需要。
What's the basis of your belief that the product is safe?
你凭什么相信产品是安全的？
The Chinese people are very friendly.
中国人很友好。