translation.en: And of course, if you're a speaker here, like Hans Rosling, a speaker finds this complex, tricky. But in Hans Rosling's case, he had a secret weapon yesterday, literally, in his sword swallowing act.
translation.zh: 假如你能像汉斯·罗斯林那样讲得有趣生动 有些人可能会认为这样的复杂性很难理解 但是罗斯林却有一套秘密 我说的是 他竟然施起口吞宝剑的绝技来了