Vacuum valve
[化] 真空阀
🧩 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
on the telephone for me, please.
请替我拨电话。
I'm going to put on to her.
我会请她回电话。
We had to queue for hours to get in and there must have been several hundred people present just before the show began.
我们不得不排了好几个小时才进得场去。在演出开始前场内肯定已有好几百人了。