But that's getting harder to do, because cities are becoming smooth. 但这样的机会已经越来越少了,因为城市正在变得光滑。 New downtowns sprout towers that are almost always made of concrete and steel and covered in glass. 高塔在

发表于:2018-12-05 / 阅读(54) / 评论(0) 分类 TED演讲设计篇

BOB DOUGHTY: Welcome to THIS IS AMERICA in VOA Special English. I'm Bob Doughty. BARBARA KLEIN: And I'm Barbara Klein. This week on our program, we tell you about the Guadalupe Mountains National Park in Texas. We explain its place in the history of

发表于:2018-12-16 / 阅读(69) / 评论(0) 分类 2010年VOA慢速英语(四)月

Using science as a guide, we attempt to recreate the final moments of the dinosaurs. 我们以科学为指引,试图重建恐龙的最后时刻。 The first effect was the impact itself. 第一个效果是撞击本身。 So when a 10-kilometer diam

发表于:2018-12-28 / 阅读(40) / 评论(0) 分类 侏罗纪搏击俱乐部

Many of the people who go to Florida stop on their trip to see sights, 许多前往佛罗里达的人们会在中途停下来欣赏风景, and one of the greatest sights is in Virginia and Kentucky where the rock under the ground is all limestone. 而

发表于:2018-12-29 / 阅读(153) / 评论(0) 分类 美国学生世界地理教材

Liberated from ages of darkness What do we really know about our ancestors who lived in limestone caves at Zhoukoudian? Not a great deal, really, except that the modern day inhabitants of northern China would probably be able to trace their lineage

发表于:2018-12-30 / 阅读(55) / 评论(0) 分类 胡敏托福词汇记单词

Visitors at Egypt's Giza Pyramids on Saturday got a rare opportunity. They were able to catch a glimpse inside an underground chamber, just south of the Great Pyramid containing the pieces of an ancient funerary boat which many believed was intended

发表于:2018-12-30 / 阅读(70) / 评论(0) 分类 国家地理2008年

You may think you are gazing upon a sleepy coral reef in the Caribbean Sea, and of course you are. But hiding in plain sight, is a riving teeming hotbed of erotica , that makes a Hollywood hot up party seem like a trip to the dentist. This is a coral

发表于:2018-12-30 / 阅读(141) / 评论(0) 分类 国家地理2007年

Grammar Girl here. Todays topic is cement versus concrete. Guest writer Sal Glynn writes: Accuracy is important. You might think concrete and cement are interchangeable, but you'll quickly find that you're mistaken when some guy at Home Depot rolls h

发表于:2019-01-02 / 阅读(161) / 评论(0) 分类 英语语法 Grammar Girl

But their attitude changed when the head of the village fell ill. They blamed the birds and were all set to destroy their nests, but the local government stepped in to protect them. Bendy bamboo may not be the safest nesting place, but at least this

发表于:2019-01-05 / 阅读(48) / 评论(0) 分类 英语听力:文化博览2008年

For centuries, the buildings of ancient Egypt have captured the attention of historians, artists, and travelers. Transcript of radio broadcast: 15 July 2008 VOICE ONE: I'm Steve Ember. VOICE TWO: Cairo at sunset And I'm Faith Lapidus with EXPLORATIO

发表于:2019-01-11 / 阅读(82) / 评论(0) 分类 VOA慢速英语2008年(七)月

Another World, Underground: Carlsbad Caverns National Park 美国西南部的一处UNESCO世界遗产 Welcome to This Is America with VOA Learning English. This week on our program, we explore a UNESCO World Heritage Site in the American Southwest, n

发表于:2019-01-11 / 阅读(62) / 评论(0) 分类 2013年VOA慢速英语(八)月

AS IT IS 2015-08-08 Beirut Residents Fight for Dalieh Coastline 贝鲁特居民争取Dalieh海岸线 Beiruts waterfront area of Dalieh is one of the few public stretches of coastline in Lebanon. But that could soon change. This past May, developers c

发表于:2019-01-12 / 阅读(65) / 评论(0) 分类 2015年VOA慢速英语(八)月

And how, you may reasonably wonder, can scientists know what oxygen levels were like hundreds of millions of years ago? 你也许有理由想知道,科学家们怎么会知道几亿年以前的氧气浓度? The answer lies in a slightly obscure b

发表于:2019-01-17 / 阅读(90) / 评论(0) 分类 万物简史

A major attraction at this year's International Garden Expo now taking place in southern Beijing is a sunken garden dubbed the Jinxiu Valley. CRI's Zhang Ru tells us more about this garden, which has sprouted from a former sand-pit. Visitor Wang Jie

发表于:2019-01-19 / 阅读(79) / 评论(0) 分类 世界各地新闻集锦

All that year the animals worked like slaves. But they were happy in their work. 那一年,动物们干起活来就像奴隶一样但他们乐在其中。 They grudged no effort or sacrifice, well aware that everything that they did was for the ben

发表于:2019-01-29 / 阅读(66) / 评论(0) 分类 动物农场 Animal Farm

Lesson 39 A Soft And Flexible MetalLead 第39课 柔韧的软金属铅 In Wales, in Derbyshire, and in the north of England, hills made of limestone are very common. In the cracks of this limestone we often find a beautiful silvery mineral called gal

发表于:2019-02-07 / 阅读(89) / 评论(0) 分类 英国学生科学读本

Cement is a major component of concrete, the world's most widely used man-made material, an integral part of roads, bridges and buildings. But making cement requires heating limestone and other materials to very high temperatures, a process that rele

发表于:2019-02-08 / 阅读(172) / 评论(0) 分类 VOA标准英语2010年(一月)

Such old shells found in the rocks are called fossils. 这些从岩石中找到的古老甲壳,名叫化石。 Another kind of rock in which many fossils are found is called limestone. A drop of acid or of strong vinegar will tell you whether a sto

发表于:2019-02-13 / 阅读(77) / 评论(0) 分类 英国学生科学读本

The four miners have been named as Guan Qingji, Hua Mingxi, Li Qiusheng and Zhao Zhicheng. They were brought to the surface one after another through an specially drilled access shaft between 9:20 and 10:50 local time, late on Friday. They are now re

发表于:2019-02-14 / 阅读(88) / 评论(0) 分类 2016CRI中国国际广播电台

When the Nautilus returned to the surface of the ocean, I could take in Reao Island over its whole flat, wooded expanse. 当诺第留斯号回到海面上来的时候,我可以望见这个低洼的和多树的克列蒙瑞尼岛发展的全部过程。

发表于:2019-02-25 / 阅读(75) / 评论(0) 分类 《海底两万里》中英双语有声读物