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【英语时差8,16】人类最好的朋友(上)

时间:2015-11-30 07:09来源:互联网 提供网友:yajing   字体: [ ]
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 Scientists are making great strides in understanding the genes1 that allow such a wide range of shapes, sizes and personalities2 in different dog breeds. Did you know domestic dogs were bred from wolves about 15,000 years ago? That's pretty recent in evolutionary3 terms. Isn't it? Very. Humans have sped up the diversification4 of dogs by selecting for particular physical or behavioral traits such as size, coat type, trainability, and hunting or herding5 ability. But dogs still show greater variety than any other domesticated6 animal, and for a long time this variance7 has largely been unexplained. A group of genetics researchers collaborated8 with dog breeders and veterinarians to study the DNA9 from 148 different dog breeds. With such a large sample of genes from very different kinds of dogs, they were able to identify regions in the dog DNA that are important in regulating some key traits that differ between breeds.


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1 genes 01914f8eac35d7e14afa065217edd8c0     
n.基因( gene的名词复数 )
参考例句:
  • You have good genes from your parents, so you should live a long time. 你从父母那儿获得优良的基因,所以能够活得很长。 来自《简明英汉词典》
  • Differences will help to reveal the functions of the genes. 它们间的差异将会帮助我们揭开基因多种功能。 来自英汉非文学 - 生命科学 - 生物技术的世纪
2 personalities ylOzsg     
n. 诽谤,(对某人容貌、性格等所进行的)人身攻击; 人身攻击;人格, 个性, 名人( personality的名词复数 )
参考例句:
  • There seemed to be a degree of personalities in her remarks.她话里有些人身攻击的成分。
  • Personalities are not in good taste in general conversation.在一般的谈话中诽谤他人是不高尚的。
3 evolutionary Ctqz7m     
adj.进化的;演化的,演变的;[生]进化论的
参考例句:
  • Life has its own evolutionary process.生命有其自身的进化过程。
  • These are fascinating questions to be resolved by the evolutionary studies of plants.这些十分吸引人的问题将在研究植物进化过程中得以解决。
4 diversification 8scxf     
n.变化,多样化;多种经营
参考例句:
  • The seminar was to discuss diversification of agriculture. 该研讨会讨论的是农业多种经营。 来自辞典例句
  • Firm diversification is increasingly achieved by the means of takeover and merger. 通过接管和兼并,厂商经营范围日益多样化。 来自辞典例句
5 herding herding     
中畜群
参考例句:
  • The little boy is herding the cattle. 这个小男孩在放牛。
  • They have been herding cattle on the tableland for generations. 他们世世代代在这高原上放牧。
6 domesticated Lu2zBm     
adj.喜欢家庭生活的;(指动物)被驯养了的v.驯化( domesticate的过去式和过去分词 )
参考例句:
  • He is thoroughly domesticated and cooks a delicious chicken casserole. 他精于家务,烹制的砂锅炖小鸡非常可口。 来自《简明英汉词典》
  • The donkey is a domesticated form of the African wild ass. 驴是非洲野驴的一种已驯化的品种。 来自《简明英汉词典》
7 variance MiXwb     
n.矛盾,不同
参考例句:
  • The question of woman suffrage sets them at variance. 妇女参政的问题使他们发生争执。
  • It is unnatural for brothers to be at variance. 兄弟之间不睦是不近人情的。
8 collaborated c49a4f9c170cb7c268fccb474f5f0d4f     
合作( collaborate的过去式和过去分词 ); 勾结叛国
参考例句:
  • We have collaborated on many projects over the years. 这些年来我们合作搞了许多项目。
  • We have collaborated closely with the university on this project. 我们与大学在这个专案上紧密合作。
9 DNA 4u3z1l     
(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。
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