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
That's a relief.
现在我放心了。
Sigh. He doesn't even know I'm alive.
啊啊，他一直都不知道我还活着。
Which language is spoken by the largest number of people in the world?
世界上哪种语言说的人最多？