Reduction valve
[化] 减压阀
🧩 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
What do you do in your spare time?
你在业余时间如何消遣？
Every heart has its own sorrow.
人人都有伤心处。
What are you doing?
你在干什么？