音标:[aɪsəʊkən'tʊə] ;
n. 等量线
[网络] 等高线

Manfred Bietak was interested in the role played by the Nile in ancient times when he stumbled upon the strange truth about Piramesse. He was trying to trace the lost river beds and waterways of the Nile in order to map out what the Delta would have

发表于:2018-12-05 / 阅读(247) / 评论(0) 分类 遗失的法老城市

By Carol Pearson Washington, DC 29 May 2006 watch Autism Gene report Researchers at the University of Texas Southwestern have been able to genetically change mice so their behavior is similar to some people with autism. The researchers hope their di

发表于:2019-01-13 / 阅读(123) / 评论(0) 分类 2006年VOA标准英语(五月)

RACHEL MARTIN, HOST: There was a gathering here in Washington, D.C. last week that had nothing to do with the inauguration or with politics. It was an occasion for matchmaking, although not a romantic kind. Here, farmers got set up with chefs in an e

发表于:2019-01-16 / 阅读(70) / 评论(0) 分类 2017年NPR美国国家公共电台1月

By Melinda Smith Baltimore, Maryland 05 September 2006 watch report Celiac Disease For thousands of years, human beings have suffered from a genetic disorder that has received attention only in the last few decades. The disorder is called celiac dis

发表于:2019-01-26 / 阅读(133) / 评论(0) 分类 2006年VOA标准英语(九月)

With Mason refusing to survey the mountain, the job fell to Maskelyne. So for four months in the summer of 1774, Maskelyne lived in a tent in a remote Scottish glen and spent his days directing a team of surveyors, who took hundreds of measurements f

发表于:2019-01-29 / 阅读(69) / 评论(0) 分类 万物简史

Speaking on environmental protection, Premier Li Keqiang called improving the environment a battle and listed the major targets for this year. We will fight to win the battle of conserving energy, reducing emissions. and improving the environment, Li

发表于:2019-02-05 / 阅读(89) / 评论(0) 分类 cctv9英语新闻2015年
学英语单词