When you sit with a nice girl for two hours you think it's only a minute. But when you sit on a hot stove for a minute you think it's two hours. That's relativity.

你和一位可爱的女郎坐在一起,两小时就象一分钟;你坐在炽热的炉灶上,一分钟就象两小时.这就是相对论.