Combination valve
[化] 复合阀
🧩 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 hard to do anything but listen in this family.
在这个家庭 除了听别人之外还能怎样。
From which station does the train leave?
这列火车从哪个站开出呢？
and another 700 for the survivors to be reduced by half again.
剩下的一半人再过700年，才会又减少一半。