And lastly, here's Destin, from "Smarter Every Day," 最后是《每天聪明一点点》的德斯丁， talking about the conservation of angular momentum, and, since it's YouTube, cats: 为我们讲述动量守恒，由于是在YouTube上，所以他用猫来举例： Hey, it's me,

The distinction between the happiness of the experiencing self 近年来，经验自我的快乐 and the satisfaction of the remembering self has been recognized in recent years, 和记忆自我的满足的差异性已能分清， and there are now efforts

Interview of the President by YouTube LibraryWITH STATE OF THE UNION Q&A 1:45 P.M. EST MR. GROVE: Hello, everyone. We're here at the White House today for a very unique event -- an exclusive inter

I have a story about following dreams.Or maybe more accurately, it's a story about finding a path to make those dreams real. 我给大家讲个追梦的故事，确切地说是一个将梦想变为现实的故事。 You know what it's like,to wake up i

Here it comes, Cat. Paolo, go. Last you solo. The one you made. 现在来，小凯。保罗，走。最后的独舞。你们编的那个。 Well done. Okay, good. Super. So-- 太棒了。好的，很好，非常好。所以—— So--Thank you. So -- three versions. 所以。谢谢。所以——三个版本。 Oh.