Rarifying
vt. 使成精细；使变稀薄\\nvi. 变稀薄；纯化
🗣️ 情景例句
I'm sure the plan is viable.
我肯定这个方案行得通。
The many children of that family used to play together for hours.
那一家的孩子们常常大伙一起玩上几个小时。
Be careful not to fall ill.
注意不要生病了。