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
No, not yet. What about you?
不， 还没有。你呢？
It's really a bargain.
租金很便宜。
Good morning, class! Who is on duty today?
同学们，早上好！今天谁值日？