and may confidently expect that the flag which has waved its untarnished folds over every sea will still float in undiminished honor. 并自信地期望那曾在每一海面上飘扬而不受沾污的旗帜仍将以未损的荣耀飘扬。 But these,like many other subj

Obama's Weekly Address WEEKLY ADDRESS: Happy Holidays from the President and First Lady 奥巴马每周电视讲话:总统和第一夫人圣诞祝辞 THE PRESIDENT: Merry Christmas everybody! Now, we’re not going to take much of your

And the first myth is if you try really hard 谣言一：如果你很努力地尝试， you can live to be 100. 你就可以活到一百岁。 False. 错了。 The problem is, only about one out of 5,000 people 事实上，在美国，每五千人中只有一人 in America live to be 100

全球变暖是我们目前面临的一个大问题，不过全世界都过分关注二氧化碳，却忽略了另外一个重要的气体——甲烷。 Fred Krupp: Let's launch a satellite to track a threatening greenhouse gas 我们能否发射一颗卫星来追踪威胁地球的温室气体？ We've got a big problem on our hands with global

Hi, everybody. The story of America is a story of progress. It's written by ordinary people who put their shoulders to the wheel of history to make sure that the promise of our founding applies no