As an aside, I have experienced an interesting phenomenon in the last few days, something that I expect Chris Hadfield may get at TED in a few years' time, conversations that go something like this: "Oh, Antarctica. Awesome.
说句题外话，前些天 我遇上了个有趣现象， 宇航员克里斯·哈菲尔德几年前 在TED演讲时应该也经历过。 我遇上了诸如此类的对话： “天啊，南极，棒极了！”，