THE PRESIDENT: Hello. My name is Shelly Ortiz -- oh, wrong page. (Laughter.) I was just teasing. I knew I wasn’tShelly Ortiz. (Laughter.) Everybody give Shelly a big round of applausefor the great wor
Actually, I have wracked my mind and heart for what I ought to say to you today. I have asked myself what I wish I had known at my own graduation, and what important lessons I have learned in the 21 y
Obama's Weekly Address WEEKLY ADDRESS: America Is a Place Where Hard Work Should Be Rewarded 奥巴马每周电视讲话:美国应该是一个辛勤工作能得到回报的地方 Hi,everybody. 大家好。 For the first time in more than 6 years, the unemployment
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
