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
At this hour?
在这个时候？
What would you like to eat?
你想吃什么？
Needless to say, the bigger the risk an insurance company takes, the higher the premium you will have to pay.
不用说，保险公司承担风险越大，你付的保险费也就越高。