Nonreturn valve
[机] 止回阀
🧩 词语组成解析
不返回的, 止逆的, 止回的
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
Yes? May I help you?
什么事？我能为您效劳吗？
As you all know.
你们知道。
It looks as if it hasn't been washed following the instructions.
这看起来没按说明来洗。