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
I was really worried.
刚才我真的很担心。
Yes, and I took many pictures.
是的，我还照了好多照片。
You don't have many apples, Jim, says Li Lei.
“你的苹果不多，吉姆，”李垒说