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SSS 2008-06-05

时间:2010-05-14 01:52来源:互联网 提供网友:0922013129   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American's 60-Second Science, I am Karen Hopkin. This'll just take a minute.

Biologists, traditionally track migrations2 by tagging animals with devices that allow their movements to be monitored. But Homo sapiens can't be fitted with radio collars, at least not without making them feel self-conscious and absurd.It's not exactly Big Brother. But if you have a cellphone, scientists in Boston may be watching you, or at least, using your cellphone records to see where you go. Because people carry and use their phones every day, they provide a great way for researchers to get a handle on human migration1. The Boston scientists looked at records from 100,000 cellphone users over a 6-month period. And they pinpointed3 people's positions based on which transmission towers handled their calls. They found that humans truly are creatures of habit: they tend to make regular trips to the same few locations like work, home, or the local Pizza place. The results appeared in the June 5th issue of the journal Nature. Getting a good fix on people's comings and goings could help predict traffic patterns, or even prevent epidemics4.Those same phone records show that Ray’s famous original pizza is clearly the human's first choice.

Thanks for the minute for Scientific American's 60-Second Science, and I am Karen Hopkin.


点击收听单词发音收听单词发音  

1 migration mDpxj     
n.迁移,移居,(鸟类等的)迁徙
参考例句:
  • Swallows begin their migration south in autumn.燕子在秋季开始向南方迁移。
  • He described the vernal migration of birds in detail.他详细地描述了鸟的春季移居。
2 migrations 2d162e07be0cf65cc1054b2128c60258     
n.迁移,移居( migration的名词复数 )
参考例句:
  • It foundered during the turmoils accompanying the Great Migrations. 它在随着民族大迁徙而出现的混乱中崩溃。 来自辞典例句
  • Birds also have built-in timepieces which send them off on fall and spring migrations. 鸟类也有天生的时间感应器指导它们秋春迁移。 来自互联网
3 pinpointed e23273e2459d3a2f113ef7cdb8d1c728     
准确地找出或描述( pinpoint的过去式和过去分词 ); 为…准确定位
参考例句:
  • His refusal to help simply pinpointed his cowardice. 他拒绝帮助正显示他的胆小。
  • Computers pinpointed where the shells were coming from. 计算机确定了炮弹发射的位置。
4 epidemics 4taziV     
n.流行病
参考例句:
  • Reliance upon natural epidemics may be both time-consuming and misleading. 依靠天然的流行既浪费时间,又会引入歧途。
  • The antibiotic epidemics usually start stop when the summer rainy season begins. 传染病通常会在夏天的雨季停止传播。
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