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
THE PRESIDENT: Thank you. Thank you, Lordstown. (Applause.) Thank you, guys. It is good to be back in Ohio. (Applause.) And it's good to be at one of GM's flagship plants with all of you. (Applause.)
51. To Be Our Great Generations! 51. 成为我们的最伟大一代！ When I graduated from college, high oil prices had pushed the economy into recession. Jobs were hard to find and unemployment was over 10%. There was u
Hi, everybody. Earlier this week was Equal Pay Day. It marks the extra time the average woman has to work into a new year to earn what a man earned the year before. You see, the average woman who work
And that's the difference between problems that are additive, like CO2, 这个就是可添加性问题，像二氧化碳问题， which we go slowly up and then we tip, and problems that are depletive, in which we lose what we have, which
