Selector valve
[化] 换向阀
🧩 词语组成解析
selector
[si'lektə]
n. 选择者，选择器;
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
Hey, what did you do on your trip?
嗨，旅游时玩的怎么样？
He recommended me for the post of principal.
他推荐我担任校长。
In this way, he was able to solve the mystery.
就这样，他解开了起火之谜。