Valve cylinder
[化] 阀筒
🧩 词语组成解析
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
He went to Canada on business.
他因公赴加拿大。
Won't you buy me a newspaper on your way home?
回家的时候，替我买份报纸好不好？
Why don't I pick you up at your house?
为什么不让我去接你呢？