英语作文,是关于雨是怎么来的,怎么形成的的一英语作文

What makes it rain?
When water becomes warm enough,it evaporates as vapor into the air.When a mass of air quickly cools to its saturation point,the water vapor condenses into clusters of tiny water droplets and frozen water crystals.We call these clusters clouds.Over time,the droplets and crystals that make up a cloud can attract more water to themselves.When water droplets grow heavy enough,gravity pulls them down as raindrops.If the air is cold enough,the ice crystals can remain frozen and grow large enough to fall as snow,sleet,freezing rain or hail.
Raining is earth's natural phnomenon.Hot air evaporate steam up the sky,just like the above process and make cloud and when meets with the cold air,which makes the evaporated steam changes into water drops and fall down onto Earth again.It repeated again and again for thousands of years.So this is rain.
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