用英文介绍:雨的形成过程.

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用英文介绍:雨的形成过程.用英文介绍:雨的形成过程.用英文介绍:雨的形成过程.Whenwaterisheated,itturnsintovapor.Itgoesupwiththeair.Theairc

用英文介绍:雨的形成过程.
用英文介绍:雨的形成过程.

用英文介绍:雨的形成过程.
When water is heated,it turns into vapor.It goes up with the air.The air can hold some vapor at some temperature.When the air goes up and becomes cooler and cooler,it cannot hold so much vapor.Then vapor becomes water.When water falls from the sky,it's called "rain".After it rains,it becomes water again.