Let's go get this done. Thank you everybody. God bless you,". Mr.Obama went to the arena where John McCain accepted last year's Republican presidential nomination, and said the nation can no longer afford to play games with health care.

VOA: standard.2009.09.12

And I could take that information, type it up into a program, make some assumptions about speed and direction and what routes they're going to take and actually watch the ambulance go to St. John's Mercy.

我得到这条信息之后，将它输入程序里，假设它们的速度和方向,以及它们应走哪条线路,就能看到救护车进入圣约翰医院。

斯坦福公开课 - Twitter之父Jack.Dorsey演讲：好奇和灵感的力量课程节选