低大潮基准面

Taiwan is located on the Pacific Rim of Fire. This means there are many underwater volcanoes nearby, and the area suffers from many earthquakes and other disasters. Yet, there is one good thing about living on the Pacific Rim of Fire: there are plent

发表于:2018-11-30 / 阅读(157) / 评论(0) 分类 常春藤生活英语

本讲为2006年下半年新的教学内容,请对照教材听录音! “They may want a health professional to open up communication for them with their loved ones or family--- there’s nearly a

发表于:2018-12-01 / 阅读(134) / 评论(0) 分类 自考英语(二)60讲

The temperature is in the single digits in Glenwood Springs, Colorado, but Cindy Lundin can't wait for her daily swim. I come down and soak in the pool, to, er, alleviate all the aches and pains that

发表于:2018-12-02 / 阅读(118) / 评论(0) 分类 万花筒2006年

The cormorant gives up for now. The bird has been foiled by the clarity of the water, the very thing that enables the manatee to thrive. The light through these waters helps plants flourish, and manatees are strict vegetarians. They can eat a hundred

发表于:2018-12-03 / 阅读(103) / 评论(0) 分类 自然百科2009年

By piecing together the evidence these creatures left behind, we can build a picture of this sub-tropical corner of the continent as it was 13,000 years ago. While most of North America was still in the grip of the Big Freeze, Florida was an ice age

发表于:2018-12-03 / 阅读(84) / 评论(0) 分类 探索与发现2012年

Low-Lying Areas of New York City Suffer Flooding Sounds of sump pumps fill the air in low-lying areas of New York City. Don, a water systems professional in Brooklyn, has been on the job, pumping out basements since before dawn. He says the worst flo

发表于:2018-12-08 / 阅读(82) / 评论(0) 分类 VOA标准英语2012年(十月)

ARI SHAPIRO, HOST: For decades, the Colorado River has fed growing cities from Denver to Los Angeles, and a lot of the produce in grocery stores across the country right now was grown with Colorado River water. Now with climate change and severe drou

发表于:2018-12-17 / 阅读(83) / 评论(0) 分类 2017年NPR美国国家公共电台1月

Why does Florida have so many springs? Florida sits on a layer of porous limestone which acts as an underground reservoir or aquifer. This aquifer can absorb huge amounts of water. Where the pressure is great enough, springs bubble up, spewing up bil

发表于:2018-12-26 / 阅读(90) / 评论(0) 分类 自然百科2009年

This triggered other dramatic changes. As sea levels dropped, so did the inland water tables. Florida's fresh water drained away through the porous limestone rock. Pools dried up and springs diminished. Florida was on the brink of drought. And animal

发表于:2018-12-27 / 阅读(86) / 评论(0) 分类 探索与发现2013年

(man) I know you're anxious to get your permits and get started. But there're just a few things I'd like to mention that might help you avoid trouble during your stay. First of all, make sure you carry adequate water. You'll need it if you're hiking

发表于:2018-12-30 / 阅读(140) / 评论(0) 分类 托福听力短文

This week has been a very busy time for Surf Lifeguards. The sea around many parts of New Zealand has been quite dangerous recently with high waves and rips. In the week since New Year, Surf Lifeguards at Papamoa beach in the Bay of Plenty rescued 37

发表于:2018-12-31 / 阅读(100) / 评论(0) 分类 新西兰英语

As the migrating herds arrive in the plateaus river valleys, the spring is here. This is why they have made the journey after the famine of winter. Food is everywhere. Birds have flown in from as far away as the Arctic and subtropics. Canada geese jo

发表于:2019-01-05 / 阅读(89) / 评论(0) 分类 自然百科2012年

By Cathy Majtenyi Nairobi 19 May 2008 Fuel efficient stoves and ceramic water purifiers are two examples of low-tech innovations that can help people in poor countries improve their quality of life. Because what is known as appropriate technology usu

发表于:2019-01-10 / 阅读(121) / 评论(0) 分类 VOA标准英语2008年(五月)

Everyday Grammar: Unusual Plurals 英语日常语法:不寻常的复数 One fish, two fish, red fish, blue fish, goes the Dr. Seuss childrens story. Why isnt it two fishes? You may think, Ok, its hard to count fish so we group them all together. No p

发表于:2019-01-12 / 阅读(120) / 评论(0) 分类 2015年VOA慢速英语(九)月

The Relaxing Waters of Hot Springs National Park 阿肯色州温泉国家公园:放松的水域 Sometimes a visit to a national park means hiking rugged trails and climbing high mountains. Other times it means crawling through caves or rafting down a

发表于:2019-01-12 / 阅读(134) / 评论(0) 分类 2016年VOA慢速英语(九)月

AILSA CHANG, HOST: Scientists announced today that they have figured out the cause of an outbreak of Legionnaires' disease in Flint, Mich., a few years ago. Twelve people died. This was at the start of the city's water crisis. And the problem was a l

发表于:2019-01-16 / 阅读(113) / 评论(0) 分类 2018年NPR美国国家公共电台2月

The living is easy. But it won't last long. At this altitude, the air is so dry that rain evaporates before it even hits the ground. The water that flows off the plateau is no longer being replaced. Already there is drought in forests beyond the mead

发表于:2019-01-22 / 阅读(86) / 评论(0) 分类 自然百科2012年

Nature reports results from GRACE, a satellite machine designed to use gravity measurement to monitor the world's water resources. GRACE is the Gravity Recovery and Climate Experiment and it's a two-satellite machine. These two satellites are followi

发表于:2019-01-22 / 阅读(105) / 评论(0) 分类 自然百科2010年

That nine hundred years is an averageand a somewhat misleading one. 900年是个平均数字也是个会让人产生错觉的数字。 According to Robert B. Smith and Lee J. Siegel in Windows into the Earth, a geological history of the region, 罗伯特

发表于:2019-02-25 / 阅读(73) / 评论(0) 分类 万物简史

本期内容: The greatest hate springs from the greatest love 最大的恨来自最大的爱 这里,我们重点学习一个单词 spring S-P-R-I-N-G spring 做名词有春天,弹簧和泉的意思 last Spring 去年春天 a brokenspring 换掉的

发表于:2019-03-02 / 阅读(97) / 评论(0) 分类 口语侠每日早读