美国总统奥巴马与其夫人发表了2010年圣诞节英语演讲，祝全国人民圣诞节快乐，鼓励全国人民支持军队及军人的家属，强调了军人保家卫国的牺牲奉献精神。 The President and First Lady Extend Christmas Greeting and Urge Americans to Support the Troops and Their Families Weekly Addre
This week, I spent some time talking with college students about how we can make higher education more affordable. And one of the things I told them was how proud I was that they were making that inve
One of our graduate students then says, well, 我们的一个毕业生说，好吧 how does a driverless car communicate with pedestrians? 这个无人驾驶的车，怎样提防行人呢？ You have nobody to make eye contact with. 没有司机看着它啊 You don't kn
The market is not the society. Our societies are, of course, much, much more than the market. 市场不是社会。我们的社会，当然比市场要大许多。 But lack of trust in the market can rub off on society so we lose trust in our soc
