And all of this used to really get to me. 过去，这一切常常困扰我。 Back in those days, I had a lot of sleepless nights, worrying about what people thought of me, 在那些日子里，我常常无法人睡，担心人们如何看待我， wondering if I might be
MRS. OBAMA: Well, it’s good to see you all again! (Applause.) You are the first in this series. The first! Nobody has done this yet. You’re the very first. But let me tell you a little bit
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
a real story of mine-01 Good morning,ladies and gentlemen,today i am so happy to stand here to give you a speech.Or rather, a real story of mine. Though with time going by,i can still remember what
