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
It's nice to meet you.
很高兴见到你。
Did you go hunting last yesterday?
你昨天去打猎了吗？
Half an hour later ,she woke up and began to cry.
半小时后她醒了，哭了起来。