translation.en: Most of the talks that you've heard in the last several fabulous days have been from people who have the characteristic that they have thought about something, they are experts, they know what's going on.
translation.zh: 大多数的演讲 你在前几天那些美妙的日子听到的 都是来自一些很有特点的人 就是他们都已经思考过一些事 他们都是这方面的专家，他们知道这个领域的现状