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SSS 2010-11-19

时间:2010-12-07 06:57来源:互联网 提供网友:seniorboy   字体: [ ]
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    (单词翻译:双击或拖选)

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 Jersey1 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 metropolitan2 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 serial3 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 mobility4 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.


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1 jersey Lp5zzo     
n.运动衫
参考例句:
  • 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。
2 metropolitan mCyxZ     
adj.大城市的,大都会的
参考例句:
  • 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。
3 serial 0zuw2     
n.连本影片,连本电视节目;adj.连续的
参考例句:
  • A new serial is starting on television tonight.今晚电视开播一部新的电视连续剧。
  • Can you account for the serial failures in our experiment?你能解释我们实验屡屡失败的原因吗?
4 mobility H6rzu     
n.可动性,变动性,情感不定
参考例句:
  • The difference in regional house prices acts as an obstacle to mobility of labour.不同地区房价的差异阻碍了劳动力的流动。
  • Mobility is very important in guerrilla warfare.机动性在游击战中至关重要。
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