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
It contains basically all we have agreed upon during our negotiation.
这基本上包括了我们谈判中取得一致的条款。
Would you hold the line, please, I will find out his number for you.
请你不要挂断，我替你找他的号码。
Why? English is the first language in none of these countries.
为什么？在这些国家中英语都不是第一语言。