THE PRESIDENT: Thank you, General, for your kind and short introduction. (Laughter.) I am pleased to be back at the National Defense University again. It turns out this is my fifth visit as President.
I'm not quite sure whether I really want to see a snare drum at nine o'clock or so in the morning. But anyway, it's just great to see such a full theater, and really I must thank Herbie Hancock and hi
And by the time you all reach your billionth second here on earth when you're a little over six months into your 31st year 你们也会等到十亿位变动的那一刻到时你们大约是31岁半过一点 We will probably be over 9 billion and perh
What I would hope that I could further argue to you is that this is the invention of multicellularity. 我希望能进一步地说服你们的是，这就是多细胞生物的起源。 Bacteria have been on the Earth for billions of years; humans, couple
