They do not make us a nation of takers; they free us to take the risks that make this country great. 它们不会使我们成为一群不劳而获的人，反而使我们敢于去冒险，这才使国家强大。 We, the people, still believe that our obligations as America
人体通过晒太阳来合成维生素D，可是皮肤科医生理查德·威勒指出，阳光还可以带来另一个惊人的益处。他的团队通过新研究表明：一氧化氮这种大量储存在皮肤中的化学传递质，能通过紫外线照射而释放出来，对血压和心血管系统产生很大益处。这是什么意思呢？那好，就从解释为什么苏格兰人比澳大利亚人更容易生病开始吧……演讲视频（无字幕）：Richard W
Let's take a closer look in the United States. 让我们来看看美国。 Over the last couple of years -- really 2013, 2014 -- we prematurely retired four nuclear power plants. 在过去的几年里，尤其是2013、14年，我们过早报废了四个核电站。 They
Thank you. (Applause.)Thank you so much. Thank you. And thank you, General Caslen, for that introduction. To General Trainor, General Clarke, the faculty and staff at West Point -- you have been outst
