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
Mom,
妈，
To learn how to count
学习记账
Nice to meet you too! What class are you in?
我也很高兴。你是哪班的？