Buy someone's coffee.

　　为他人买杯咖啡

　　It's just coffee -- no one needs coffee, so this doesn't really matter, right? But what if you knew that a $2 cup of caffeine could change someone's day, week or their whole perspective? Boom: That cup of coffee just changed the world. Welcome to the Random Acts of Kindness movement, where nice things happen just because nice people do them. You don't have to, you don't necessarily need to, but you can -- and it restores people's faith in humanity. The best part? They pass it on.

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　　只是杯咖啡而已——没人必须要喝咖啡，所以也无所谓，对吧?但是如果你知道2美元一杯的咖啡可以改变一个人的一天、一周甚至整个人生，那你会怎么做?哇，一杯咖啡改变了整个世界。欢迎参与“好事随意做”活动，就是因为好人做好事，好事才会来。你不一定要做，你不必一定做，但你能做得到——这样会让人们重新相信人性。你猜最好的部分是什么?人们会把它传递下去。