WEEKLY ADDRESS: President Obama Marks Fourth Anniversary of Hurricane Katrina; Will Visit New Orleans Later This Year WASHINGTON – In this week’s address, President Barack Obama remembered

THE PRESIDENT: Ladies and gentlemen, welcome to Tee Ball on the South Lawn. (Applause.) Laura and I are honored you are here, and we welcome they're military families and players from all across the U

Hi, everybody. I'm speaking to you today from Springfield, Illinois. 大家好！今天，我在伊利诺伊州斯普林费尔德市向大家演讲。 I spent eight years in the state senate here. It was a place where, for all our surface differences

I mean, architects have been thinking about these ideas for a long time. What we need to do now,develop things that can scale to those 300 million Chinese people that would like to live in the city,an

Now, with RFIDs and other things -- whatever technology it is, it doesn't really matter. 到那个时候，我们使用无线射频辨识系统（RFID）但用什么技术都无妨。 The point is that everything will have embedded in it some sensor connecting