evaporate
1、及物动词/不及物动词
when a liquid evaporates, or is evaporated, it changes from a liquid state to a gas, because its temperature has increased.
使…蒸发；蒸发
2、不及物动词
If a feeling, plan, or activity evaporates, it gradually becomes weaker and eventually disappears completely.
（情绪、计划、活动）逐渐消逝
自己练习所写的小短文：
My son, named weiwei, has many a question about clouds in the last few days.
Why are there dark clouds with lightning？
Why are there white clouds in the blue sky？
Why is going to rain with black clouds in the sky？
Why is no rain when white clouds appear in the blue sky？
Because the dark clouds are too heavy to hang in the sky. They have to drop down the earth.
Because the white clouds are so light that they can hang in the sky all the time. And the blue sky and the white clouds are good friends and companions, so they always appear together.
Why…
Why…
Why…
Because…
Because…
Because the water on the earth is evaporated by the sun, it evaporates into steam and goes up into sky.
Why…
Oh no,
I really don't know how to answer these questions.
My son becomes angry.
A moment later,
his bad mood evaporates.
Our talk is go on until I'm extremely thirsty.
最近几天，我的儿子维维总是有很多关于云的问题。
为什么乌云闪电？
为什么白云蓝天？
为什么有黑云就要下雨？
为什么白云不下雨？
因为乌云太重了，挂不住了，就要落到地上来。
因为白云很轻，可以一直挂在蓝天上。而且蓝天和白云是好朋友好伙伴，所以他们总是一起出现。
为什么……
为什么……
为什么……
因为……
因为……
因为太阳把地面上的水晒成水蒸气，水蒸气飘到天空里就成了云。
为什么……
哦，不！
我真的不知道怎样回答这些问题。
我的儿子生气了。
一会儿，
他的坏情绪逐渐消失了。
我们的交谈继续，直到我口干舌燥。
第二天的单词日记，明天要离开老家回到合肥，开始忙碌起来，继续坚持。