TED演讲:为什么要制造无用的东西(2) So I do a lot of things like this. I see a problem and I invent some sort of solution to it. 我做过很多这样的事。我发现了一个问题,就会发明某个解决方法来应对它。 For example, brushing your teeth. Like, it's this thing we all have to d 英语演讲 2020-07-16 hisen