Rarefying
v. 使稀薄( rarefy的现在分词 ); （思想等）精炼; 使纯化; 使变得精妙深奥
✅ 同义词
🗣️ 情景例句
I would like to open a checking account.
我想开一个支票户头。
Does the back door have a lock on it?
后门上有锁吗？
It has expanded without any idea of the true nature of the human beings who run the machines,
现代工业发展起来了，却根本没想到操作机器的人的本质。