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
It's only a suggestion, and you can do what you please.
这只是个建议，你可按照你的意愿去做。
Not only did he make a promise, but he also kept it.
他不仅许下诺言，而且遵守了。
It's Sunday today.
今天是星期天。