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SSS 2012-02-24

时间:2012-03-19 06:17来源:互联网 提供网友:gmeng   字体: [ ]
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    (单词翻译:双击或拖选)

 This is Scientific American 60 second science, I am Amy Kraft, Got a minute?

 
Newly licensed1 drivers who make sharp turns and come to sudden screeching2 stops are nerve-wracking. And now there’s evidence to confirm that erratic3 driving by teens predicts their odds4 of accidents.
 
Researchers installed computer and camera equipment on the cars of 42 newly licensed drivers to measure what they called “elevated g-force events,” like quick turns and jamming on the brakes.
 
The researchers tracked the newbies for 18 months, and found that g-force event numbers let them make good bets on who was most likely to crash the car. Data showed that for every 100 miles on the road, elevated g-force events ranged from near zero for some drivers to as high as 50 for others. And drivers with the highest rate ofg-force events showed greater instances of fender benders, crashes or close calls.
 
All told, 26 teens were involved in 37 impacts. The entire cohort experienced 242 near misses. The study is in the American Journal of Epidemiology. 
 
The research points to the need to monitor new drivers—and to better steer5 a heavy foot in the right direction.
 
Thanks for the minute, for scientific American 60 second Science, I'm Amy Kraft

点击收听单词发音收听单词发音  

1 licensed ipMzNI     
adj.得到许可的v.许可,颁发执照(license的过去式和过去分词)
参考例句:
  • The new drug has not yet been licensed in the US. 这种新药尚未在美国获得许可。
  • Is that gun licensed? 那支枪有持枪执照吗?
2 screeching 8bf34b298a2d512e9b6787a29dc6c5f0     
v.发出尖叫声( screech的现在分词 );发出粗而刺耳的声音;高叫
参考例句:
  • Monkeys were screeching in the trees. 猴子在树上吱吱地叫着。
  • the unedifying sight of the two party leaders screeching at each other 两党党魁狺狺对吠的讨厌情景
3 erratic ainzj     
adj.古怪的,反复无常的,不稳定的
参考例句:
  • The old man had always been cranky and erratic.那老头儿性情古怪,反复无常。
  • The erratic fluctuation of market prices is in consequence of unstable economy.经济波动致使市场物价忽起忽落。
4 odds n5czT     
n.让步,机率,可能性,比率;胜败优劣之别
参考例句:
  • The odds are 5 to 1 that she will win.她获胜的机会是五比一。
  • Do you know the odds of winning the lottery once?你知道赢得一次彩票的几率多大吗?
5 steer 5u5w3     
vt.驾驶,为…操舵;引导;vi.驾驶
参考例句:
  • If you push the car, I'll steer it.如果你来推车,我就来驾车。
  • It's no use trying to steer the boy into a course of action that suits you.想说服这孩子按你的方式行事是徒劳的。
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