Specific refraction
[化] 折射系数
🧩 词语组成解析
🗣️ 情景例句
My boss expects me to work day and night.
我的老板恨不得我一天到晚地工作。
Poverty shows us who are our friends and who are our enemies.
贫困才能显出敌和友。
This decline in vigour with the passing of time is called ageing.
生命力随时间的流失而衰退叫做衰老。