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SSS 2008-04-17

时间:2010-05-13 06:50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 Steve Mirsky.Got a minute?

Talk about your vicious cycles.  A new study finds that belly1 fat could be making you hungrier.  Which would lead to more belly fat.  The research was performed at the University of Western Ontario.  The culprit is a hormone2 called Neuropeptide Y, or NPY.  It was thought that only the brain produced this hormone, but no, your belly fat can make it too.  So NPY produced in the brain initially3 makes you eat more and gain weight around your middle, and then that fat makes more NPY, which makes you eat more. Now, fat cells can’t reproduce themselves.  But the release of NPY can stimulate4 the reproduction of cells that are precursors5 to fat cells.  So the result is the same—more and more fat cells.  The researchers next want to come up with a way to easily detect the presence of the hormone—and to turn it off.  The hope is to identify and treat those people at greatest risk for becoming abdominally obese6.  Because it would be easier to prevent obesity7 than to treat the many diseases that obesity can lead to.

 

Thanks for the minute. For Scientific American's 60 Second Science, I am Steve Mirsky.

 


点击收听单词发音收听单词发音  

1 belly QyKzLi     
n.肚子,腹部;(像肚子一样)鼓起的部分,膛
参考例句:
  • The boss has a large belly.老板大腹便便。
  • His eyes are bigger than his belly.他眼馋肚饱。
2 hormone uyky3     
n.荷尔蒙,激素,内分泌
参考例句:
  • Hormone implants are used as growth boosters.激素植入物被用作生长辅助剂。
  • This hormone interacts closely with other hormones in the body.这种荷尔蒙与体內其他荷尔蒙紧密地相互作用。
3 initially 273xZ     
adv.最初,开始
参考例句:
  • The ban was initially opposed by the US.这一禁令首先遭到美国的反对。
  • Feathers initially developed from insect scales.羽毛最初由昆虫的翅瓣演化而来。
4 stimulate wuSwL     
vt.刺激,使兴奋;激励,使…振奋
参考例句:
  • Your encouragement will stimulate me to further efforts.你的鼓励会激发我进一步努力。
  • Success will stimulate the people for fresh efforts.成功能鼓舞人们去作新的努力。
5 precursors 5e19fce64ab14f5a4b5c8687640c2593     
n.先驱( precursor的名词复数 );先行者;先兆;初期形式
参考例句:
  • Phenyl (or polyphenyl) substituted epoxides serve as excellent precursors to phenyl (or diphenyl) carbenes. 某些苯代(或多苯)环氧乙烷是制取带苯环(或二苯)碳烯的极好原料。 来自辞典例句
  • Note the presence of megakaryocytes, erythroid islands, and granulocytic precursors. 可见巨核细胞,红细胞岛和粒细胞前体细胞。 来自互联网
6 obese uvIya     
adj.过度肥胖的,肥大的
参考例句:
  • The old man is really obese,it can't be healthy.那位老人确实过于肥胖了,不能算是健康。
  • Being obese and lazy is dangerous to health.又胖又懒危害健康。
7 obesity Dv1ya     
n.肥胖,肥大
参考例句:
  • One effect of overeating may be obesity.吃得过多能导致肥胖。
  • Sugar and fat can more easily lead to obesity than some other foods.糖和脂肪比其他食物更容易导致肥胖。
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