单词：PGSI
单词：PGSI 相关文章
And so I get this question all the time from parents, and they ask me, Would you let your own child play football? 家长们总是问我这样一个问题，他们问我，你会让你自己的小孩儿打橄榄球吗？ Or, Should I let my child pla
TED演讲科技篇
So, some of you most likely were here two years ago and saw the demo by Jeff Han, 你们当中有些人两年前在这里应该看过Jeff Han演示微软的Surface系统， or some of you may think, Well, doesn't this look like the Microsoft Surface
TED演讲教育篇
A few months ago the fairy tale came true. 几个月前，童话故事成真了！ We announced to the world that we know what these streaks are. It's liquid water. 我们向世界宣布，我们已经知道这些条纹是什么了。是液态水。
TED演讲科学篇
And in fact, Curiosity -- which has been roving on the surface now for about three years -- 事实上，好奇号探测车，在火星表面上漫游已经有三年了 has really shown us that it's sitting in an ancient river bed, where water flowed
TED演讲科学篇
I want to talk about 4.6 billion years of history in 18 minutes. That's 300 million years per minute. Let's start with the first photograph NASA obtained of planet Mars. This is fly-by, Mariner IV. It was taken in 1965. When this picture appeared, th
英语演讲
Now, as we pull down here, we still have a whole set of creatures living on the surface of the planet. 现在当我摧毁这里的时候，在这个星球上其实还居住着一系列的生物， There are all these different dynamics going on here.
TED演讲教育篇