Refringence
折射; 折射系数
🗣️ 情景例句
Four o'clock at the advanced exercise class. With me.
四点钟去高级健身课， 跟我一起。
When the tree is fallen, every one runs to it with his axe.
大树一倒下，人人持斧来。
I have been offered a large sum of money to go away, but I am determined to stay here.
他们曾向我提供一大笔钱让我搬走，但我决定留在这儿。