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
Well ...
那……
My brother got up earlier than I did.
与我做了比，我的兄弟早起床了。
For the same reason, writers talk interminably about their own books,
由于这个原因，作家喋喋不休地谈论自己的书，