Rain
2012级（4）班[毕业]
董雪莹
2013-04-05 11:07
阅读(180)
英语作文
The rain is falling from clouds, water, land and sea surface water evaporates into water vapor, water vapor rises to a certain height into a small water droplets freeze, they form a cloud of small water droplets in the clouds, they collide with each other, merge into larger droplets, when it is time to air support don't live, fall down from the clouds, the formation of rain