每当遇到多云天气的时候，你会想念阳光吗?有一些人是会的。太阳是一种极其重要且具有强大能量的来源，太阳光是地球接收到的最大的能源，而它也有很多种用途。Do you miss the sunrays when it is cloudy out there? Well, some of us do. The Sun is an extremely important and powerful source of energy and sunlight by far is the largest source of energy received by Earth which is useful for several purposes.

     由于辐射的巨大径向扩散，太阳照射在地球表面的强度相当低。而地球大气层和云层吸收或散射了54%的阳光，也对其形成了一定的削弱。The intensity of sun is quite low at the surface of the earth because of the enormous radial spreading of radiation. There is also a certain amount of loss due to earth’s atmosphere and clouds whichabsorb or scatter (thrown in various random directions) 54% of the sunlight.