【英语时差8,16】克隆恐龙

时间：2016-01-20 07:41:29

搜索关注在线英语听力室公众号：tingroom，领取免费英语资料大礼包。

（单词翻译）

Don and Yael give a movie review of sorts on this Moment of Science D: Welcome to another episode of A Moment of Science at the Movies. Y: Today we're reviewing Steven Spielberg's 1993 blockbuster Jurassic Park. D: As I'm sure you recall, Jurassic Park is about a scientist who clones dinosaurs² from DNA³ preserved in amber⁴. Y: Although I found the film entertaining and the special effects spectacular, I was disappointed by the scientific inaccuracies. Cloning dinosaurs might be an intriguing⁵ idea, but scientifically speaking it's not possible. D: Wait a sec. We can clone sheep and other animals, right? So why not dinosaurs? Y: Let me rephrase. Cloning a dinosaur¹ is theoretically possible. But it's not like cloning a sheep. D: Why not? Y: It has to do with how cloning works. In nuclear transfer cloning, a nucleus⁶ from the animal to be cloned is inserted into an egg with its nucleus removed. The nucleus contains most of the genetic⁷ material of eggs and other cells. If things go well, the egg with its new nucleus forms an embryo⁸ that starts to divide and mature. After a few days it's transferred to a surrogate mother. D: OK, so why not do that with dinosaurs or other extinct animals like wooly⁹ mammoths? Y: The problem is that we don't have well preserved DNA from dinosaurs and wooly mammoths. Millenia of freezing and thawing¹⁰ and other processes break up most of the DNA. And even if we did find useable dinosaur DNA, finding a surrogate mother similar in size and biology to a dinosaur would be difficult, to say the least. Crocodile or ostrich¹¹ eggs might be as close as we could come. D: So what you're saying is there's no way to resurrect dinosaurs. Y: Well, there is one place where it's possible. D: Where? Y: Hollywood.

分享到：

点击

收听单词发音

1 dinosaur
n.恐龙
参考例句：
Are you trying to tell me that David was attacked by a dinosaur?你是想要告诉我大卫被一支恐龙所攻击？ He stared at the faithful miniature of the dinosaur.他凝视著精确的恐龙缩小模型。

2 dinosaurs
n.恐龙( dinosaur的名词复数 )；守旧落伍的人，过时落后的东西
参考例句：
The brontosaurus was one of the largest of all dinosaurs. 雷龙是所有恐龙中最大的一种。来自《简明英汉词典》 Dinosaurs have been extinct for millions of years. 恐龙绝种已有几百万年了。来自《简明英汉词典》

3 DNA
(缩)deoxyribonucleic acid 脱氧核糖核酸
参考例句：
DNA is stored in the nucleus of a cell.脱氧核糖核酸储存于细胞的细胞核里。 Gene mutations are alterations in the DNA code.基因突变是指DNA密码的改变。

4 amber
n.琥珀；琥珀色；adj.琥珀制的
参考例句：
Would you like an amber necklace for your birthday?你过生日想要一条琥珀项链吗？ This is a piece of little amber stones.这是一块小小的琥珀化石。

5 intriguing
adj.有趣的；迷人的v.搞阴谋诡计(intrigue的现在分词)；激起…的好奇心
参考例句：
These discoveries raise intriguing questions. 这些发现带来了非常有趣的问题。 It all sounds very intriguing. 这些听起来都很有趣。来自《简明英汉词典》

6 nucleus
n.核，核心，原子核
参考例句：
These young people formed the nucleus of the club.这些年轻人成了俱乐部的核心。 These councils would form the nucleus of a future regime.这些委员会将成为一个未来政权的核心。

7 genetic
adj.遗传的，遗传学的
参考例句：
It's very difficult to treat genetic diseases.遗传性疾病治疗起来很困难。 Each daughter cell can receive a full complement of the genetic information.每个子细胞可以收到遗传信息的一个完全补偿物。

8 embryo
n.胚胎，萌芽的事物
参考例句：
They are engaging in an embryo research.他们正在进行一项胚胎研究。 The project was barely in embryo.该计划只是个雏形。

9 wooly
adj.毛茸茸的；糊涂的
参考例句：
I like the feel of this cloth and it has a warm wooly feel.我喜欢这块布的手感,它摸上去毛茸茸的很暖和。 He wore a brown t-shirt with jeans and a pair of shoes,with a wooly hat covering his hair.小贝身穿一件棕色t恤，搭配牛仔裤和皮鞋，头戴一顶盖住头发的羊毛帽子。

10 thawing
n.熔化，融化v.（气候）解冻( thaw的现在分词 )；（态度、感情等）缓和；（冰、雪及冷冻食物）溶化；软化
参考例句：
The ice is thawing. 冰在融化。来自《现代英汉综合大词典》 It had been snowing and thawing and the streets were sloppy. 天一直在下雪，雪又一直在融化，街上泥泞不堪。来自英汉文学 - 嘉莉妹妹

11 ostrich
n.鸵鸟
参考例句：
Ostrich is the fastest animal on two legs.驼鸟是双腿跑得最快的动物。 The ostrich indeed inhabits continents.鸵鸟确实是生活在大陆上的。

本文本内容来源于互联网抓取和网友提交，仅供参考，部分栏目没有内容，如果您有更合适的内容，欢迎点击提交分享给大家。