Combination valve
[化] 复合阀
🧩 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 classes are mandatory for your major?
你的专业什么课是必修的？
I ate jam for breakfast yesterday.
我昨天早饭吃的是果酱。
Wherever there is smoke, there is fire.
无风不起浪。