Rarefication
n. 变稀薄, 稀薄
🗣️ 情景例句
My parents set aside a college savings fund for me.
我的父母为我存了一笔上学的费用。
Scientists contribute to the well-being of mankind.
科学家为人类造福。
It is quite possible that the thief might put some meat in you bag.
这个窃贼很可能把肉放到你的袋子里。