After a summit at the White House today between top congressional leaders, the president and both presidential candidates as well, a proposed 700-billion-dollar financial bailout deal now appears to be in some flux. NPR's Debbie Elliott has more. Co

发表于:2018-12-02 / 阅读(86) / 评论(0) 分类 2008年NPR美国国家公共电台九月

Identicals share one of the closest human relationships biologically. They are likely to grow up looking and sounding extremely similar, yet not a 100% match. A small number of genes in the mother's eggs sit outside the nucleus, known as mitochondria

发表于:2018-12-05 / 阅读(62) / 评论(0) 分类 国家地理2007年

柯灵思英语-英语听力高手38

发表于:2018-12-07 / 阅读(52) / 评论(0) 分类 柯灵思英语

SCIENCE IN THE NEWS -January 8, 2002: Top stories of 2001 By Nancy Steinbach VOICE ONE: This is Bob Doughty. VOICE TWO: And this is Doug Johnson with the Special English program SCIENCE IN THE NEWS. T

发表于:2018-12-07 / 阅读(52) / 评论(0) 分类 科技之光

Scientists Come Closer to Creating Laboratory Embryos An international team of scientists says it has moved a step closer to creating artificial embryos. The team used stem cells from mice. Stem cells are simple cells that can develop into other kind

发表于:2018-12-17 / 阅读(40) / 评论(0) 分类 2018年VOA慢速英语(八)月

The spidery steel-work of gallery above gallery faded away in all directions into the dark. 一层层蜘蛛网样的钢架长廊从各个方面往黑暗里模糊了去。 Near them three red ghosts were busily unloading demijohns from a moving stairc

发表于:2019-01-01 / 阅读(69) / 评论(0) 分类 美丽新世界

Next to the Liners stood the Matriculators. 生产线工人旁边是收纳员。 The procession advanced; one by one the eggs were transferred from their test-tubes to the larger containers; 流水线继续前进;卵子一个个从试管转入更大的

发表于:2019-01-01 / 阅读(54) / 评论(0) 分类 美丽新世界

For in nature it takes thirty years for two hundred eggs to reach maturity. 因为在自然状态下,要让两百个卵子成熟需要三十年之久。 But our business is to stabilize the population at this moment, here and now. 但我们现在的任

发表于:2019-01-01 / 阅读(58) / 评论(0) 分类 美丽新世界

I shall begin at the beginning, said the D.H.C. and the more zealous students recorded his intention in their notebooks: Begin at the beginning. 我从头说一说主任说,积极的学生把他的意思记进了笔记本:从头说一说。 These

发表于:2019-01-01 / 阅读(57) / 评论(0) 分类 美丽新世界

SCIENCE IN THE NEWS - Cloning in South Korea / Ancient Insect / Preeclampsia Research By Broadcast: Tuesday, March 09, 2004 (THEME) VOICE ONE: This is Science in the News, in VOA Special English. I'm

发表于:2019-01-02 / 阅读(104) / 评论(0) 分类 科技之光

We use those in my field of bone marrow transplantation. 我们把这些干细胞用于骨髓移植领域。 Geron, just last year, started the first trial using human embryonic stem cells to treat spinal cord injuries. 杰龙去年开始第一次尝试

发表于:2019-01-03 / 阅读(91) / 评论(0) 分类 TED演讲科学篇

Celine Dion is still packing the main in a Los Vegas theater and Access Hollywood's Nancy O'Dell got to sit down with the singer for an exclusive interview. Good morning, Nancy. Hello, Alexis, good mo

发表于:2019-01-07 / 阅读(66) / 评论(0) 分类 访谈录

不少准妈妈们都为宝宝做过三维或四维彩超,并给宝宝们拍下人生中的第一张照片。而试管宝宝们如今更可以拥有自己胚胎细胞时期的珍贵影像,这就是细胞拍。 It is the latest trend in baby pictu

发表于:2019-01-08 / 阅读(81) / 评论(0) 分类 英文语法词汇

This is the VOA Special English Agriculture Report. The United States government wants to know what the public thinks about its findings on the safety of cloned animals. Cloned dairy cows Cyagra, left, and Genesis at a farm in Maryland The Food and D

发表于:2019-01-11 / 阅读(49) / 评论(0) 分类 VOA慢速英语2007年(一)月

AILSA CHANG, HOST: Scientists recently made headlines when they announced they had figured out how to edit DNA in human embryos for the first time. This week, the scientists invited NPR health correspondent Rob Stein into their lab in Portland, Ore.,

发表于:2019-01-16 / 阅读(96) / 评论(0) 分类 2017年NPR美国国家公共电台8月

It really is a bit too thick, the Head Mistress of Eton was saying to the Director of Crematoria and Phosphorus Reclamation. 实在太愚蠢了。伊顿公学的女校长对火葬与磷回收场场长说, When I think that I actually ... 在我认为

发表于:2019-01-29 / 阅读(92) / 评论(0) 分类 美丽新世界

The child scampered off into the bushes and was lost to sight. 那姑娘匆匆地跑掉了,消失在灌木丛里。 Exquisite little creature! said the Director, looking after her. 美妙的小东西!主任望着她说, Then, turning to his stu

发表于:2019-01-29 / 阅读(46) / 评论(0) 分类 美丽新世界

Gene Stops Ovaries from Testifying A mouse study in the journal Cell finds that a gene in females must remain active throughout her life to keep her ovaries from turning into testes. Karen Hopkin reports Little girls are made of sugar and spice and,

发表于:2019-01-30 / 阅读(185) / 评论(0) 分类 60秒科学

Science and technology 科学技术 The 2012 Nobel prizes 诺贝尔生理学奖 Good eggs 再生医学界的大好人 THIS year's Nobel physiology prize goes to Sir John Gurdon and Shinya Yamanaka for a crucial discovery in stem-cell science?how to m

发表于:2019-02-24 / 阅读(79) / 评论(0) 分类 经济学人科技系列

文本: AVERY: Now look here, son.I got a problem and I reckon you could help me with it. TOMMY: I'm no builder. AVERY: No, I was thinking more of your demolition skills.Now this here, this is the development as planned and this,this is the proper

发表于:2019-02-27 / 阅读(87) / 评论(0) 分类 小龟乐游记英语短文