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

Particularly to the landmarks here the Duke Gardens, I often went there to study and when I was stressed out for those finals 特别是这里的地标杜克公园 我读书时经常到那里学习也经常到那里缓解期末考试的压力 Yesterday, I went there in the aft

灾难到来时，我们才会发现看似普通的日常生活是多么可贵。2009年1月15日，全美航空1549号班机迫降纽约哈德逊河，Ric Elias 就坐在第一排的位置。听他分享在“人生最后一刻” 学到了什么。 Ric Elias: 3 things I learned while my plane crashed 坠机让我学到的三件事 Imagine a big explosion a

We need more women not just to sit at the table 我们需要更多的女性不仅仅坐在会议桌旁 but as President Obama said 而且要像奥巴马总统 a few weeks ago at Barnard 几周前在Barnard学校说的那样 to take their rightful seats at the head of the ta

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