Rarify
vt. 使成精细；使变稀薄\\nvi. 变稀薄；纯化
🗣️ 情景例句
Oh, well, that would be very nice.
噢， 好吧， 那倒很好。
Three times a week I have to walk all the way to the gym for my Phys Ed class.
一周有三次，我为了参加体育课而必须走路到体育馆。
He resolved to give up smoking.
他决心戒烟。