单词：laser crystal contamination
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By Carol Pearson Washington 30 April 2008 Ten years ago, the U.S. Food and Drug Administration approved LASIK, eye surgery with a laser that enables people to see without glasses. But about five percent of LASIK procedures fail, and those patients ca
VOA常速英语2008年（四月）
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
新概念英语第四册
Lesson 80 The Crystal Palace 水晶宫 First listen and then answer the question. 听录音，然后回答以下问题。 How many people visited the Great Exhibition of 1851? Perhaps the most extraor
新概念英语第二册
EXPLORATIONS - The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can
2013年VOA慢速英语(二)月
New Laser Device Helps Parkinson's Patients Walk 新激光设备帮助帕金森患者重获行走能力 Parkinsons disease slowly destroys the brains ability to control the muscles, depriving the patients of their mobility. Researchers at the Mayo Cl
VOA标准英语2014年(二月)
环境问题一直雅思口语中经久不衰，比如近水之地、家乡可改变的地方、你关注的环境问题等等...下面雅思频道就为同学们整理了环境问题相关的词汇，希望同学们可以用到雅思口语话题中，
雅思英语
The script of this programme 本节目台词 The Crystal Palace was a building made almost entirely of glass John: Hi there! Welcome to On The Town from a very interesting part of south London. I'm John, with me Oliver. We're at Crystal Palace. Oliver:
都市掠影
This is Scientific Americans 60-Second Science. Im Adam Hinterthuer. Got a minute? Youve probably heard about mercury contamination in fish. But a new study says that the toxin has climbed out of the water. Researchers from the College of William Mar
Scientific American(四)月
星级典句： 第一句：You may have another certificate showing the goods to be free from radioactive contamination. 你们要开具另一份证明书，以证明货物没有受放射线污染。 A: Mr. White, any other requirements? 怀特先生，
天天商务口语
The United States Navy has demonstrated a new laser weapon operating in the Persian Gulf. The Laser Weapons System, or LaWS, is deployed on the USS Ponce transport ship. A live test firing of the weapon was recently carried out for Cable News Network
2017年VOA慢速英语(七)月
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
英文语法词汇
This is All Things Considered. I'm Michelle Norris. Phone calls from Sweden woke up two American scientists this morning, John Hall and Roy Glauber. They will share the Nobel Prize for Physics with a German Researcher Theodor Haensch. All three worke
2005年NPR美国国家公共电台
1. Washington is not looking for a graceful exit from the Iraq war. This assurance comes from President Bush in a private meeting Thursday with Iraqi leader Nouri al-Maliki. During the meeting, Maliki
美联社新闻一分钟2006
The History of the Laser Welcome to EXPLORATIONS in VOA Special English. Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one of the best examples of how technology can go from the sci
2013年VOA慢速英语(五)月
EXPLORATIONS - The Laser: Futuristic Science Found at Your Local Store MARIO RITTER: Welcome to EXPLORATIONS in VOA Special English.Im Mario Ritter. This week, we tell about one of the most recognizable objects in science fiction the laser. It is one
2012年VOA慢速英语(一)月
AS IT IS 2015-03-23 Would You Eat Food from Fukushima? 你会吃来自福岛的食物吗? Thousands of delegates from around the world gathered this month in northeast Japan for a United Nations conference on disaster relief. Four years ago, the area
2015年VOA慢速英语(三)月
By Paul Sisco Washington 14 November 2007 At the McDonald Observatory in western Texas, a unique space program has been quietly underway for more than 30 years. It is called the Lunar Laser Ranging Program. VOA's Paul Sisco has more. Research scienti
VOA常速英语2007年（十一月）
Katia: So, Enam, let's talk about environmental problems of our countries. In Bangladesh, what is an environmental problem? Enam: Actually, we have a lot of environmental problems in Bangladesh but mainly I'd say the soil contamination is quite bad,
英语趣味课堂
每一日你所付出的代价都比前一日高，因为你的生命又消短了一天，所以每一日你都要更积极。今天太宝贵，不应该为酸苦的忧虑和辛涩的悔恨所销蚀，抬
英文语法词汇
Voice 1 Hello. Im Ruby Jones. Voice 2 And Im Marina Santee. Welcome to Spotlight. This programme uses a special English method of broadcasting. It is easier for people to understand, no matter where in the world they live. A small candle burns. It re
环球英语 Spotlight