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SSS 2009-01-07

时间:2010-05-17 01:56来源:互联网 提供网友:木渐浅。   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 Adam Hinterthuer. Got a minute?

 

Man-made light sources can really throw animals for a loop. Moths1 can't tear themselves away from lightbulbs, and newly hatched sea turtles often shun2 moonlit ocean waves for the bright lights of inland cities. But a study in January's issue of the journal Frontiers in Ecology and the Environment says direct light sources are only part of the problem.

Light that reflects off shiny urban surfaces, like roads, parking lots and buildings, has an equally devastating3 power to attract. That's because such polarized light means one thing to most animals—water. For example insects like dragonflies make nocturnal flights to lay their eggs using horizontally polarized light as a beacon4. That light might bring them to a pond or a stream, but a well-lit interstate is equally alluring5. If enough insects lay eggs on the road instead of in the water, the entire food web can be disrupted.

But there are ways to dim our influential6 lights, the scientists say. Bugs7 are less attracted to roadways with white hatch marks on the pavement. And light-colored curtains can keep birds from slamming into dark buildings. Simple fixes, really, to keep basic instincts from turning into fatal attractions.

 

Thanks for the minute for Scientific American's 60-Second Science. I'm Adam Hinterthuer.

 


点击收听单词发音收听单词发音  

1 moths de674306a310c87ab410232ea1555cbb     
n.蛾( moth的名词复数 )
参考例句:
  • The moths have eaten holes in my wool coat. 蛀虫将我的羊毛衫蛀蚀了几个小洞。 来自《简明英汉词典》
  • The moths tapped and blurred at the window screen. 飞蛾在窗帘上跳来跳去,弄上了许多污点。 来自《现代英汉综合大词典》
2 shun 6EIzc     
vt.避开,回避,避免
参考例句:
  • Materialists face truth,whereas idealists shun it.唯物主义者面向真理,唯心主义者则逃避真理。
  • This extremist organization has shunned conventional politics.这个极端主义组织有意避开了传统政治。
3 devastating muOzlG     
adj.毁灭性的,令人震惊的,强有力的
参考例句:
  • It is the most devastating storm in 20 years.这是20年来破坏性最大的风暴。
  • Affairs do have a devastating effect on marriages.婚外情确实会对婚姻造成毁灭性的影响。
4 beacon KQays     
n.烽火,(警告用的)闪火灯,灯塔
参考例句:
  • The blink of beacon could be seen for miles.灯塔的光亮在数英里之外都能看见。
  • The only light over the deep black sea was the blink shone from the beacon.黑黢黢的海面上唯一的光明就只有灯塔上闪现的亮光了。
5 alluring zzUz1U     
adj.吸引人的,迷人的
参考例句:
  • The life in a big city is alluring for the young people. 大都市的生活对年轻人颇具诱惑力。
  • Lisette's large red mouth broke into a most alluring smile. 莉莎特的鲜红的大嘴露出了一副极为诱人的微笑。
6 influential l7oxK     
adj.有影响的,有权势的
参考例句:
  • He always tries to get in with the most influential people.他总是试图巴结最有影响的人物。
  • He is a very influential man in the government.他在政府中是个很有影响的人物。
7 bugs e3255bae220613022d67e26d2e4fa689     
adj.疯狂的,发疯的n.窃听器( bug的名词复数 );病菌;虫子;[计算机](制作软件程序所产生的意料不到的)错误
参考例句:
  • All programs have bugs and need endless refinement. 所有的程序都有漏洞,都需要不断改进。 来自《简明英汉词典》
  • The sacks of rice were swarming with bugs. 一袋袋的米里长满了虫子。 来自《简明英汉词典》
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