translation.en: And when I hear things like that -- little things -- because I know that there isn't anybody in this audience that wasn't likely responsible today for some little thing they did for somebody, whether it's as little as a smile or an unexpected "Hello," that's how little this thing was.
translation.zh: 而当我听到这样的事情时—— 这些微不足道的小事—— 因为我知道这里的观众没有人 会在意他们为别人做过的小事。 不管它小到是一个微笑 还是一个意想不到的“你好”， 那件事就是这么小。