原文：太阳的光在经过地球的大气层时会受到温度变化和空气中小颗粒的影响。
译文: As sunlight passes through the Earth's atmosphere, they are affected by changes in temperatures as well as particles in the air.
改译：
【正确答案】：As sunlight passes through the Earth's atmosphere, it is affected by changes in temperatures as well as particles in the air. (考点:代词单复数的正确使用)
