TED is famous for keeping a very sharp eye on the clock, so they're going to hate me for revealing this, because, actually, you should talk as long as they will let you.  Because the most favorite TEDTalks are, on average, over 50 percent longer than the least favorite ones.
TED有一点很擅长 那就是卡时间 我的以下言论 可能会让他们对我很不爽 因为其实呢，你应该在允许范围内尽可能的多讲 原因是：最受欢迎的那些TED演讲 长度平均比最不受欢迎的演讲 要长百分之五十