美国科学60秒 SSS 2013-01-10

This is Scientific Americans 60 second Science, I am Gretchen Kuda Kroen, this will just take a minute. When normal populations of healthy bacteria in the gut get out of whack, the result can be the stubborn and recurrent bacterial infection known as

美国科学60秒 SSS 2013-01-14

When normal population of healthy bacteria in the gut get out of whack, the result can be the stubborn and recurrent bacterial infection known as Clostridium Difficile, C Dif. The mean symptom is nearly constant and debilitating diarrhea. One of the

VOA慢速英语2018 洛杉矶男孩掉入排污管道后获救

California officials are praising workers for rescuing a 13-year-old boy who fell into a river of sewage in Los Angeles. 加州官员都在褒奖工人们拯救了一位掉入洛杉矶下水道的13岁男孩。 The boy, Jesse Hernandez, spent more th

新概念英语第四册Lesson 38 Water and the traveler

Lesson 38 Water and the traveller 水和旅行者 First listen and then answer the following question. 听录音，然后回答以下问题。 What does this text describe? Contamination of water supplies is usually due to poor sanitation close to wat

NPR 2011-09-09

President Obama is expected to call for hundreds of billions of dollars in new tax cuts and government spending tonight in an effort to boost the creation of jobs and bring down the nation's high unemployment rate. NPR's Scott Horsley reports the pre

美国科学60秒 SSS 2013-01-11

This is Scientific Americans 60 second Science, I am GretchenKuda Kroen, this will just take a minute. When normal populations of healthy bacteria in the gut get out of whack, the result can be the stubborn and recurrent bacterial infection known as

【英语语言学习】纯净水净化系统

(From an Omni Processor promotional video:) Bill Gates: Over 2.5 billion people have no access to safe sanitation. We asked brilliant engineers to help us solve this problem, and one of those engineers actually has proposed a solution where the waste

英语课程计划-World Toilet Day

November the 19th is World Toilet Day (WTD). This day celebrates the importance of something we never really think about too much the toilet. Imagine life without one. There are many world issues regarding toilets. WTD is a global day of action to ra

Harare Residents Face Water Shortage

By Peta Thornycroft Water rationing has been imposed in Zimbabwe's capital, where water shortages have reached critical levels. Half the city's four-million residents are either short of water or have

英语分类词汇：环境污染

污染物 aerosols气溶胶 / 气雾剂 agricultural wastes农业废物 asbestos石棉 commercial noise商业噪音 composite pollution混合污染 dioxins二恶英 hazardous substances危险物质 hazardous wastes危险废物 heavy metals重金属 h

VOA慢速英语2015 巴西为迎奥运清理河岸垃圾

AS IT IS 2015-04-18 Brazil Working to Clean Dirty Olympic Bay 巴西为迎奥运清理河岸垃圾 Around the world, people are excited for the 2016 Summer Olympic Games. The host city for the events is Rio de Janeiro, Brazil. The city is known as Ci

超过3亿人面临水污染风险

AS IT IS 2016-09-06 Water Pollution Puts Over 300 Million at Risk 超过3亿人面临水污染风险 More than 300 million people in Africa, Asia and Latin America are at risk of life-threatening diseases such as cholera and typhoid. The reason: Poll

美国国家公共电台 NPR You Probably Don't Want To Know About Haiti's Sewage Problems

DON GONYEA, HOST: Port-au-Prince, Haiti is a city of more than 3 million people with no sewer system. International donors have spent millions of dollars on infrastructure meant to help the situation. But a multi-year plan to build sewage treatment p

托福听力分学科词汇（二）

物理学 statics 静力学 motion 运动 inertia 惯性 gravitation 引力 relativity 相对 gravity 地心引力 vibration 震动 medium (media) 媒质 frequency 频率 wavelength 波长 pitch 音高 intensity 强度 echo 回声 resonance 回声，洪

TED演讲:变得更健康的不能说的秘密(3)

We want to accelerate adoption of sustainable building and development practices. 我们想要提高高承受性建筑及其应用的采纳度。 We want more innovation. 我们想拥抱更多革新。 But a lot of times, whole categories of innovati

英语听力：自然百科 泰晤士河

The River Thames runs over 200 miles through the British countryside and on to the city of London. Each day, thousands of visitors enjoy the pleasures of just being on the river. But as little as 40 years ago, this body of water had become one of Eur

VOA常速英语2013--粪菌移植可治肠道疾病

Fecal Transplants Used to Cure Intestinal Disorders 粪菌移植可治肠道疾病 粪菌移植是指将健康人粪便中的功能菌群，移植到患者胃肠道内，重建具有正常功能的肠道菌群，实现肠道及肠道外疾病的诊疗。

环境污染相关英语词汇集锦

矿山回填 oil residue recuperation 残油回收 radioactive waste management 放射性废物管理 recycled materials 回收的材料 recycling 回收 reuse of materials 材料再利用 sanitary landfills 卫生填埋 sea outfall 海洋排泄口 s

GRE试题七(2)

9. In recent years, there has been a dramatic decline in the population of the shrike, a predatory bird that inhabits flat land, such as farms and pastures. Some ornithologists hypothesize that this de

夏说英语新闻晨读 第408期:隐形眼镜不可冲进下水道

本期内容： Researchers in the US have been investigating the final journeys taken by disposable contact lenses. They found 15-20% of US users simply flick these fiddly lenses down the drain via the bathroom sink or toilet. The study suggests tha