People are living longer and societies are getting grayer. 人们现在越活越久，社会也逐渐变得老龄化。 You hear about it all the time. You read about it in your newspapers. 你可能总是听到别人这么说。你从报纸上如是读到。 You hear about it on your
So here, you're going to see a thousand robots that are working together to self-assemble the letter K. 这里你们可以看到一千个机器人合作自发组成字母K。 The K is on its side. And the important thing is that no one is in char
演说题目：This tiny particle could roam your body to find tumors 演说者：Sangeeta Bhatia 演讲稿 In the space that used to house one transistor, we can now fit one billion. That made it so that a computer
