水处理设备

By Gary Garriott Broadcast: August 25, 2003 This is Steve Ember with the VOA Special English Development Report. Freezing can keep food fresh and safe to eat. Freezing lowers the food temperature belo

发表于:2018-11-27 / 阅读(554) / 评论(0) 分类 VOA2003(下)-发展与科学

If the salinity of ocean waters is analyzed, it is found to vary only slightly from place to place. Nevertheless, some of these small changes are important. There are three basic processes that cause a change in oceanic salinity. One of these is the

发表于:2018-11-28 / 阅读(355) / 评论(0) 分类 新概念优美背诵短文50篇

Scientists have come up with a revolutionary new use for wood. They have devised a way to make it transparent. This could totally change the way many things in our lives are used and made. See-through wood could one day replace glass and be used in w

发表于:2018-12-03 / 阅读(128) / 评论(0) 分类 英语科技新闻

梁丽萍老师根据网友和学生回忆的版本还原出了以下的简约版流程图,并附上了参考范文,供考生们参考。 The diagram illustrates how rain water is processed into drinking water by using different facilities in an

发表于:2018-12-12 / 阅读(171) / 评论(0) 分类 雅思机经

The operator of Japan's crippled Fukushima nuclear plant is reporting around 300 tonnes of highly contaminated water has leaked from a storage tank. Masayuki Ono is the general manager of the Tokyo Electric Power Company. He says the puddle that has

发表于:2018-12-19 / 阅读(117) / 评论(0) 分类 世界各地新闻集锦

DEVELOPMENT REPORT - Freezing Food By Gary Garriott Broadcast: Monday, December 27, 2004 I'm Gwen Outen with the VOA Special English Development Report. Freezing can keep food fresh and safe to eat. F

发表于:2019-01-02 / 阅读(146) / 评论(0) 分类 农业与发展

By Naomi Schwarz Dakar, Senegal 29 August 2007 More than a 250,000 residents of Liberia's capital, Monrovia, have been overwhelmed by water from torrential rains and flooding from the nearby St. Paul River. The rains have left them without safe drink

发表于:2019-01-06 / 阅读(162) / 评论(0) 分类 2007年VOA标准英语(八月)

A cellphone rests in its watery-grave,a distressing sight for cellphone users everywhere. But this one, isn't dead. Hello, this Alexan,thanks for calling ,welcome, how may I help you?Liquipel is a start-up company based in Santa Ana, California. It's

发表于:2019-01-07 / 阅读(131) / 评论(0) 分类 万花筒2012年

The Salinity of Ocean Waters If the salinity of ocean waters is analyzed, it is found to vary only slightly from place to place. Nevertheless, some of these small changes are important. There are three basic processes that cause a change in oceanic s

发表于:2019-01-08 / 阅读(151) / 评论(0) 分类 英语小短文

AS IT IS 2014-12-20 Disagreement Over Lower Mekong River Dam Project A two-day meeting in Laos has left government officials and environmental activists deeply divided. The meeting was called to examine plans for a 260 megawatt dam on the Lower Mekon

发表于:2019-01-12 / 阅读(128) / 评论(0) 分类 2014年VOA慢速英语(十二)月

Asia Floods Take Heavy Toll on Local Economies Floodwaters in central Thailand have inundated industrial parks and manufacturing centers, adding to the mounting economic costs of the disaster. Cambodia, Vietnam and Laos are also continuing to tally t

发表于:2019-01-14 / 阅读(122) / 评论(0) 分类 VOA标准英语2011年(十月)

Asian Water Summit Focuses on Security, Disaster There was no sign of a water shortage here in northern Thailand as delegates gathered for the Asia-Pacific Water summit. But inside, there was talk about an impending crisis facing Asia. For the region

发表于:2019-01-14 / 阅读(99) / 评论(0) 分类 VOA标准英语2013年(五月)

Explaining the process 流程解说 A: Could you explain the paper-making process to us - in very simple terms - please? A:那么能否请你简要的给我们讲解一下纸的生产流程? B: Well, the puip falls from a box onto the first part of

发表于:2019-01-14 / 阅读(121) / 评论(0) 分类 职业技术英语口语

Shale gas extraction 页岩天然气开采 The need to be seen to be clean 天然气是清洁能源吗? Natural-gas production is booming, but its green image is in question 天然气生产蒸蒸日上,但它的清洁能源形象却受到质疑 M

发表于:2019-01-26 / 阅读(194) / 评论(0) 分类 经济学人综合

JEFFREY BROWN:And now to part two of our investigative look at the safety of America's drinking water. Science correspondent Miles O'Brien reports on the toxic chemical made famous in the movie Erin Brockovich, its potentially harmful effect on human

发表于:2019-01-27 / 阅读(205) / 评论(0) 分类 PBS访谈环境系列

JUDY WOODRUFF: A few drips of good news greeted residents of West Virginia today, but the fallout from last weeks chemical spill is far from over. There's finally relief for some of the 300,000 West Virginians who've been unable to drink, cook or eve

发表于:2019-01-27 / 阅读(98) / 评论(0) 分类 PBS访谈健康系列

Researchers in Sydney are leading a new international effort to make desalination more environmentally friendly. Current techniques tend to use excessive amounts of energy or are heavily reliant on chemicals. The University of Technology in Sydney is

发表于:2019-02-06 / 阅读(153) / 评论(0) 分类 英语新闻

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(245) / 评论(0) 分类 VOA标准英语2010年(一月)

While explaining stress management to an audience, the lecturer raised a glass of water and asked 'How heavy is this glass of water?' Answers called out ranged from 20g to 500g. 当向听众解释压力管理的时候,讲师拿起一杯水问道:这

发表于:2019-02-21 / 阅读(121) / 评论(0) 分类 阅读空间

The Salinity of Ocean Waters If the salinity of ocean waters is analyzed, it is found to vary only slightly from place to place. Nevertheless, some of these small changes are important. There are three basic processes that cause a change in oceanic s

发表于:2019-02-25 / 阅读(197) / 评论(0) 分类 双语有声阅读
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