Windows Vex Bats' Echolocating Abilities 干扰蝙蝠回声定位的烦人窗 Just as humans understand the shape of our surroundings by how light reflects off objects, bats use reflections of sounds they produce insteadwhats called echolocation. But

发表于:2018-12-02 / 阅读(90) / 评论(0) 分类 2017年Scientific American(九)月

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发表于:2018-12-06 / 阅读(57) / 评论(0) 分类 简·爱.Jane.Eyre

now Malcolm in the middle star Frankie M openned up a medical scare, a mini stroke its not usuall in someone so young. he is just 27 years old and this is not his first one. Former Malcolm in the middle star Frankie M found he is in the middle of hea

发表于:2018-12-07 / 阅读(205) / 评论(0) 分类 访谈录2013年

Four Words that Changed a Life Are you too stupid to do anything right?''These words--said by a woman to a little boy who was evidently her son--were spoken because he had walked away from her.And they were said at a volume could hear.Chastised,the b

发表于:2018-12-07 / 阅读(67) / 评论(0) 分类 感悟人生

Son of Sex Worker Struggles to Preserve Pakistan History House of treasures Tucked away in Iqbal Husseins house are treasures of Lahore's history: doors big enough for an elephant to walk through, hand-carved balconies, Hindu statues. Many art pieces

发表于:2018-12-08 / 阅读(42) / 评论(0) 分类 VOA标准英语2012年(九月)

In the business world there are fewer big topics than Amazon. It started as a retail website in 1995 selling books. From there, it grew to, well you know this, it sells most of the things you could buy at a mall and the grocery store. It has online c

发表于:2018-12-08 / 阅读(46) / 评论(0) 分类 CNN美国有线新闻2018年11月

S: The idea of having Paul McCartney sing a song that I wrote has to be one of the most exciting things of his life. S: But let me tell you. Let me tell you how this happened. Lorne Michaels who is the... S: Saturday Night Live. C: Night Live. S: Goo

发表于:2018-12-11 / 阅读(67) / 评论(0) 分类 访谈录2011年

China's trade surplus narrowed unexpectedly in July, increasing speculation that Beijing may boost stimulus spending. Chinese export growth dropped sharply with exports rising one per cent over the year to July. Imports rose at an annual rate of 4.7

发表于:2018-12-11 / 阅读(44) / 评论(0) 分类 澳洲ABC新闻快递2012年

Lesson 9 Curiosities of Animal Life 动物生活趣闻 Not all sounds made by animals serve as language, and we have only to turn to that extraordinary discovery of echo-location in bats to see a case in which the voice plays a strictly utilitarian r

发表于:2018-12-24 / 阅读(119) / 评论(0) 分类 新概念英语85年上外美音版

文本: Yet this burning sentiment would echo down the generations. Like Britannia itself, the idea of free Caledonia was from the first, a Roman invention. 译文: 但这燃烧着的激情,却不失为那个时代的缩影。如不列颠尼亚与

发表于:2018-12-26 / 阅读(62) / 评论(0) 分类 跟着英剧练发音

South Korea's currency and stocks have taken a beating this week following the financial crumbling of another major US financial institution. For many Koreans, the crisis appears quite similar to what they experienced 11 years ago but this time, som

发表于:2019-01-13 / 阅读(59) / 评论(0) 分类 VOA标准英语2008年(九月)

Lost Movie Genre Revived in 'Earth to Echo' 落寞的电影流派地球回声复兴 LOS ANGELES Today's Hollywood movies, even those that appeal to young people, have gotten darker and more violent when compared to family movies from the 1980s. A new

发表于:2019-01-14 / 阅读(56) / 评论(0) 分类 VOA标准英语2014年(六月)

Joy of World Cup Evades Sao Paulo Shantytown 巴西圣保罗贫民窟不再展现世界杯欢乐笑颜 SAO PAULO, BRAZIL The World Cup kicks off on June 12 in San Paulo, Brazils biggest city. The huge metropolis is focused on the big event, but resid

发表于:2019-01-14 / 阅读(59) / 评论(0) 分类 VOA标准英语2014年(六月)

West of Memphis Movie Sparks Murder Debate Damien Echols, Jessie Misskelley and Charles Jason Baldwin were accused of the crime. Their conviction, it turned out, was based on questionable evidence and false testimonies. The widely publicized trials a

发表于:2019-01-14 / 阅读(83) / 评论(0) 分类 VOA标准英语2013年(四月)

RACHEL MARTIN, HOST: About two-thirds of adults get their news on social media. That's according to the Pew Research Center. During the presidential campaign, we saw how easily tech can polarize our country. But can it also help bring people together

发表于:2019-01-17 / 阅读(54) / 评论(0) 分类 2017年NPR美国国家公共电台4月

But in 1893, it wasn't the river or the geology that was to be protected, rather the local antelope herds. Policing methods proved adequate though, hunting remain widespread and the antelope population remains a fraction of what it once was.Today, th

发表于:2019-01-22 / 阅读(58) / 评论(0) 分类 自然百科2013年

By Jim Kent Rapid City, South Dakota 17 July 2007 Country music enthusiasts from across the Northern Plains gathered in Rapid City, South Dakota in June for the 27th annual Black Hills Bluegrass Festival. A key feature of the three-day music event we

发表于:2019-02-03 / 阅读(107) / 评论(0) 分类 2007年VOA标准英语(七月)

Human Echolocators Use Tricks Similar to Bats Many bats use a system similar to sonar to navigate in the dark. They send out high frequency sound, sometimes as clicks, and get information about their surroundings by the timing and quality of the soun

发表于:2019-02-14 / 阅读(71) / 评论(0) 分类 2018年科学美国人3月