SSS 2010-11-19
时间：2018-12-24 作者：英语课 分类：Scientific American(十一)月
This is Scientific American's 60-Second Science. I'm Steve Mirsky. Got a minute?
Look at a map and you can tell right away where New York ends and New Jersey 1 begins. But that official border is not a true reflection of how the community is really shaped. Because northeastern Jersey is effectively part of the New York City metropolitan 2 area and southwest Jersey is really part of Philadelphia's. Researchers from Northwestern University have now mapped the country's de facto communities. And they did it in an ingenious way, using data from the Where's George project. Maybe you've gotten a dollar bill, featuring George Washington's mug, that's been stamped to indicate it's in the Where's George system. You can then go to a wheresgeorge.com and enter the serial 3 number of the bill and your location. As will, hopefully, the next person who gets that bill.
The researchers realized that the movement of the dollars tracked by Where's George is a marker for the movement of people. And the mobility 4 of people reveals true communities. The research, in Public Library of Science ONE, shows that, for example, the New England states really are a block. As is what you might call greater Texas after you've seen the video produced by the researchers. It's at snipurl.com/georgewashThanks for the minute. For Scientific American's 60-Second Science, I'm Steve Mirsky.
- He wears a cotton jersey when he plays football.他穿运动衫踢足球。
- They were dressed alike in blue jersey and knickers.他们穿着一致，都是蓝色的运动衫和灯笼短裤。
- Metropolitan buildings become taller than ever.大城市的建筑变得比以前更高。
- Metropolitan residents are used to fast rhythm.大都市的居民习惯于快节奏。