Let me give you an example of how a city's surfaces affect the way we live in it. 我来举个例子看看一个城市的外观是如何影响人们生活方式的吧。 When I visited Salamanca in Spain, I gravitated to the Plaza Mayor at all hours of the d

I Have a Dream 我有一个梦想 I say to you today, my friends, that in spite of the difficulties and frustrations of the moment, I still have a dream. It is a dream deeply rooted in the American dream. 朋友们，今天我

These bacteria are not passive riders, these are incredibly important, they keep us alive. 这些细菌不是顺从的乘客，他们难以置信得重要，他们让我们活着。 They cover us in an invisible body armor that keeps environmental insults out

But then in the apartment across the hall from this cow shed lives a newly married couple in what locals describe as one of the nicest apartments in the area. 不过从这个牛棚穿过楼道的这个公寓住着一对新婚的夫妻，这里被当地人形容为当地最好的一

Good afternoon, ladies and gentlemen: My topic today is “The Internet Will Become More Popular.” The Internet, which was unfamiliar to human beings is totally accepted by most of people. E