Return valve
[化] 回路阀
🧩 词语组成解析
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
All the girls know he's a womanizer.
所有的女孩儿都知道他和许多女孩儿有关系。
She is starting to work her way up in the company.
她在公司开始发挥实力了。
I agree that it is a difficult situation.
我同意，这种情况很难办。