insolation, insulation, isolation 三個字長得很像，都是托福閱讀常出現的字，他們的差別在哪呢？ -- insolation 指的是「日照」或是「日照量」， ... ... <看更多>

Discussion of how the amount of energy reaching the Earth from the Sun varies over the day, year, and between ... ... <看更多>