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SSS 2008-04-14

时间:2010-05-13 06:41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'm Cynthia Graber. This will just take a minute.

In vitro fertilization(试管受精) efforts can be helped by oddly enough oral contraceptives .That's the finding from Tel Aviv University, site of the largest study on using birth control to help IVF. One of the challenges to IVF is timing1. Current hormone2 treatments to stimulate3 ovulation have to coincide with a particular moment in the women's cycle, not knowing the exact timing for scheduling the egg retrieval and fertilization can be stressful, which can lower the odds4 of success. In the Tel Aviv study, researchers looked at women who underwent a 12 to 17 day treatment of oral contraception.The women were checked to make sure there was absolutely no activity in their ovaries or uterus .Then they began stimulation5 hormones6 to start the clock .Women who went through this protocol7 have similar numbers of pregnancies8 to a control group that didn't use birth control ,which means the oral contraception didn't harm their ability to conceive .The researchers say this treatment demands a slightly longer cycle and higher levels of ovulation-inducing hormones ,but they also say ,it could allow couples to more accurately9 plan for procedures ,which might give couples more peace of mind .

 

Thanks for the minute, for Scientific American’s 60-Second Science, I'm Cynthia Graber.
 


点击收听单词发音收听单词发音  

1 timing rgUzGC     
n.时间安排,时间选择
参考例句:
  • The timing of the meeting is not convenient.会议的时间安排不合适。
  • The timing of our statement is very opportune.我们发表声明选择的时机很恰当。
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 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。
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 stimulation BuIwL     
n.刺激,激励,鼓舞
参考例句:
  • The playgroup provides plenty of stimulation for the children.幼儿游戏组给孩子很多启发。
  • You don't get any intellectual stimulation in this job.你不能从这份工作中获得任何智力启发。
6 hormones hormones     
n. 荷尔蒙,激素 名词hormone的复数形式
参考例句:
  • 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。
  • The adrenals produce a large per cent of a man's sex hormones. 肾上腺分泌人体的大部分性激素。
7 protocol nRQxG     
n.议定书,草约,会谈记录,外交礼节
参考例句:
  • We must observe the correct protocol.我们必须遵守应有的礼仪。
  • The statesmen signed a protocol.那些政治家签了议定书。
8 pregnancies 2fedeb45162c233ee9e28d81888a2d2c     
怀孕,妊娠( pregnancy的名词复数 )
参考例句:
  • Since the wartime population needed replenishment, pregnancies were a good sign. 最后一桩倒不失为好现象,战时人口正该补充。
  • She's had three pregnancies in four years. 她在四年中怀孕叁次。
9 accurately oJHyf     
adv.准确地,精确地
参考例句:
  • It is hard to hit the ball accurately.准确地击中球很难。
  • Now scientists can forecast the weather accurately.现在科学家们能准确地预报天气。
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TAG标签:   SSS  contraception
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