Vacuum purge
[化] 真空驱气
🧩 词语组成解析
🗣️ 情景例句
Forgive me if I'm wrong, but haven't we met before.
如果我弄错的话请原谅我，我们以前见过面吧？
This is a poem about frontier life in the United States.
这是关于在美国的边疆生活的一首诗。
We've seen several members of the family since we arrived my grandfather and my aunt and uncle.
自我们回来以后已经见到了好几个家庭成员祖父、姑姑和叔叔。