So extraordinary variations, and surprising to some, 如此巨大的差异震惊了一些人， but not surprising to people who have read the work of Daniel Kahneman, for example, the Nobel-winning economist. 但是对一些人来说并不惊讶，比如阅读过

Hi everybody.In America, we believe that a lifetime of hard work and responsibility should be rewarded with a shot at a secure, dignified retirement.It's one of the critical components of middle-c

Ronald Reagan: "A Time for Choosing" (aka "The Speech") Program Announcer: Ladies and gentlemen, we take pride in presenting a thoughtful address by Ronald Reagan. Mr. Reagan: Reagan: Thank you. Thank

I'd like to do pretty much what I did the first time, which is to choose a light-hearted theme. 我想能和第一次演讲一样，选择一个轻松的主题。 Last time, I talked about death and dying. 上一次我谈论了关于生与死。 This time, I'm g

Of course, it's not just about stealing things. There are other avenues of technology that criminals can exploit. 当然，不单单是偷取东西。还有很多的科技途径可供罪犯开发。 Many of you will remember this super cute video from the