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在实际生活中,我发现水的蒸发有快有慢。比如,手上的水一会儿就干了,而盛在碗里的水短时间内却看不出有减少的迹
In real life, I found that the evaporation of water was fast and slow. For example, the water in your hand will dry for a while, and the water contained in the bowl will not show a trace of reduction in a short time.