Refringency
折射系数
🗣️ 情景例句
Did you have a good time today?
今天玩得开心吗？
Perish the thought
打消念头
No, no drawings can be done until the wall is dry. That may take about a week.
不行。墙不干是不能在上面画画的。大概要一周才能干。