So why is that happening? So one reason is obviously economic or structural. So you think of these areas. 为什么会这样呢？一个原因显然是跟经济或结构有关。看看这些地区。 They're beset by these terrible economic trends, built around

What are the characteristics we can control for? 我们能够控制那些特征？ Well I'm going to match families on country of birth and residence, 我考虑的匹配包括出生地和居住地， the demographics -- what sex, their age -- their incom

My fellow Americans, Each month, families across the country work very, very hard to balance their budgets and to make the tough choices necessary to take care of their loved ones and to give their ch

Hi, everybody.Over the past year, more than 10 million Americans have gained the financial security and peace of mind that comes with health insurance. 大家好！过去一年里，有超过1000万人获得了医疗保险，这一保障为他们带来了经济上的安全感和心理上

2009年10月9日，挪威诺贝尔奖委员会(nobel committee)宣布授予奥巴马总统2009年度诺贝尔和平奖。下面是奥巴马在诺奖典礼上的英语演讲及双语演讲稿。 奥巴马诺贝尔获奖感言-中英对照 your majesties, your royal highnesses, distinguished members of the norwegian nobel committee, citiz