So let's look at what happens when you make a tool that anybody can just pick up and build something quickly, 让我们看看一些实例，有了这样一个工具，任何人都可以在它的帮助下很快制作想要的东西， so one of the examples that I like to sort of ki

REMARKS BY THE PRESIDENT AFTER MEETING WITH APOLLO 11 CREW THE PRESIDENT: Very rarely do I have such an extraordinary pleasure as I have today to welcome three iconic figures, three genuine American h

Your smarts will come in handy because you will travel in a land of marvels. 你们的聪明才智必定会派上用场，因为你们将在一片充满奇迹的土地上行进。 We humans - plodding as we are - will astonish ourselves. 我们人类，尽管跬步前行，却终将令自己大吃一惊。 We'

Do you think the world is going to be a better place next year? In the next decade? 你们觉得明年这个世界会变的更好吗？未来十年呢？ Can we end hunger, achieve gender equality, halt climate change, all in the next 15 years? 我

I don't know. I don't know how long can you know that there is something bigger for you, and yet you ignore that. "我们并不活在以后，而是活在当下。"一个曾经失魂落魄，无家可归，甚至需要领取救济才能维持生活的人是怎样从一个差生就是凭借着这句话拿到了哈佛的奖学金。这就