Our current burdensome tax code is a massive lead weight against the American economy. 现行的税法令人难以负担，就像个沉重的铅块，阻碍了美国经济的发展。 It costs us millions of jobs, trillions of dollars, and billions and billions of
This week, I traveled to Chicago to deliver my final farewell address to the nation, following in the tradition of Presidents before me. It was an opportunity to say thank you. Whether we've seen eye-
Thank you, Michael. Michael, just one question: the Millennium Development Goals established 15 years ago, 谢谢你，Michael。Michael，我就问一个问题：千年发展目标是15年前确立的， they were kind of applying to every country but i
So over the past few centuries, microscopes have revolutionized our world. 过去的几个世纪，显微镜改变了世界。 They revealed to us a tiny world of objects, life and structures that are too small for us to see with our
