Refringence
折射; 折射系数
🗣️ 情景例句
He wrote some nice articles on Mom
他写了一些介绍妈妈的好文章
Every man has the defects of his qualities.
一个人的好品质上也有不足之处。
Ken gave up smoking two years ago. He'd been smoking for thirty years.
两年前肯戒了烟，之前他抽了三十年烟。