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
Why are you in such a good mood?
你怎么心情这么好？
Where are you from?
你来自哪儿？
Greetings, learned judge! I do not envy you your job. This is a most troublesome case.
您好，博学的法官！我并不羡慕您的职业。这是一个最麻烦的案子。