There's a great big elephant in the room called the economy. So let's start talking about that. 经济是个重要，而又常被避开的话题。让我们来聊下它。 I wanted to give you a current picture of the economy. That's what I have behi

Gettysburg Address Four score and seven years ago, our fathers brought forth on this continent a new nation, conceived in liberty, and dedicated to the proposition that all men are created equal. Now

本次演讲是奥巴马在北卡罗来纳州初选获胜的感言，地点是在北卡罗来纳州州立大学的雷诺兹体育馆。从1月3日初选开始以来，为赢取党内提名，奥巴马和希拉里展开了旷日持久、势均力敌的争夺战，两大选举阵营投入了大量人力和物力进行选举宣传战，彼此互有攻击。但因为希拉里在选举人票数上一直落后于奥巴马，所以她的选举阵营就加大了对奥巴马的攻击力度。在本次演讲中，奥巴马强调了民主党要团结一致对抗共和党候选人麦凯恩。 No

My fellow citizens: 同胞们： I stand here today humbled by the task before us, grateful for the trust you have bestowed, mindful of the sacrifices borne by our ancestors. I thank President Bush for his se

So remember, I said 4D. So today for the first time, we're unveiling a new project, which is a collaboration with Stratasys, and it's called 4D printing. 还记得我刚才提到了四维，今天我们首次向大家展示一个新项目，这是和Stratasys公司一同合