单词：1-ethyl-3-(3-propyl)carbodiimide
单词：1-ethyl-3-(3-propyl)carbodiimide 相关文章
Sorry,there is not text temporarily, Please help tingroom to look for it! 如果您能找到更好的听力原文，请发贴到 听力原文收集区 ，您将会获得10到30积分的奖励! Thank you！
英文魔法师字源大挪移
AS IT IS 2014-05-25 Scientists Search for New Ways to Stop Mosquitoes 科学家们寻找新的方法来对付蚊子 The sound of a mosquito can mean trouble in many parts of the world. The bite of a mosquito can be deadly. Today, we will hear about s
2014年VOA慢速英语(五)月
一个英语单词可分为三部分：前缀（prefix）词根（root）后缀（suffix）。位于词根前面的部分就是前缀。前缀，可以改变单词的意思。 carb-, carbo- 表示碳 carbon = carb + on n. 碳 carbohydrate = carbo + h
英语PK台
美科学家研发新一代驱蚊剂 In many regions of the world, mosquitoes are a seasonal pest. In other regions, they carry serious diseases like malaria. The World Health Organization estimates that almost 630,000 people died of malaria-related
VOA双语新闻 2014年1月
bedizen, [bi'diz(ə)n] v 把装饰得过分华丽而俗气；穿着俗丽 【记】bed床
不择手段背单词
By Bill Rodgers Washington. D.C. 29 March 2006 watch Civil War report A grieving widow touches her husband's coffin as it is carried to a cemetery The continuing sectarian violence in Iraq has raised
2006年VOA标准英语（三月）
一个挪威的喜剧演员二人组，他们主持的脱口秀电视节目在挪威本地有不少忠实观众，而《狐狸叫》原本是他们为了宣传新一季节目开播而制作的宣传歌曲。这首歌犹如童谣的歌词注定了它的
英乐时空
一个挪威的喜剧演员二人组，他们主持的脱口秀电视节目在挪威本地有不少忠实观众，而《狐狸叫》原本是他们为了宣传新一季节目开播而制作的宣传歌曲。这首歌犹如童谣的歌词注定了它的
英乐时空
Australia's bold plans for a carbon emissions trading scheme are under threat after the conservative opposition in Canberra hardened its stance against it. Critics of Prime Minister Kevin Rudd's proposal say it would cost jobs and provoke economic u
VOA标准英语2009年(五月)
Promising Mosquito Repellent Announced美科学家研发新一代驱蚊剂 In many regions of the world, mosquitoes are a seasonal pest. In other regions, they carry serious diseases like malaria. The World Health Organization estimates that almost 6
VOA标准英语2014年(一月)
One Police stops on police vehicle outside one Victoria's Bar. After the preparation, as necessary arrests?, this liquor drive slightly mixes. Suddenly he sees to have a young people shakely goes out from bar, spend the many figures only then finds
白领英语晨读
VOA2004（上）--各类新闻
Hi! This is Stever Robbins, host of the Get-it-Done Guys Quick and Dirty Tips to Work Less and Do More. Grammar Girl is working on her book this week and since I do a lot of public speaking, she asked me to talk about how to use similes and metaphors
英语语法 Grammar Girl
今天我们要学的词是，limited。 Limited, 是有限的意思。拉美裔移民在维吉尼亚州的王子威廉姆斯县罢工一天，The one-day work boycott appeared to have a limited effect on businesses in the county. 但似乎并没有对
英语单词荟萃
1) G2G = got to go = 我得走了 2) TTYL = talk to you later = 一会儿再聊 3) XOXO 亲亲抱抱
OMG美语
On its website, a history of the company makes no mention of leador indeed of Thomas Midgleybut simply refers to the original product as containing a certain combination of chemicals. 在它的网站上，公司的历史没有提及铅──也没有提
万物简史
By counting back through these layers and measuring the amount of lead in each, he could work out global lead concentrations at any time for hundreds, or even thousands, of years. The notion became the foundation of ice core studies, on which much mo
万物简史
Lead is a neurotoxin. Get too much of it and you can irreparably damage the brain and central nervous system. Among the many symptoms associated with overexposure are blindness, insomnia, kidney failure, hearing loss, cancer, palsies, and convulsions
万物简史
今天我们要学的词是optimistic。 Optimistic乐观的。美国第二季度国内生产总值公布后，President Barack Obama said he is 'guardedly optimistic' about the direction of the U.S. economy, 美国总统奥巴马表示，他对美国经
英语单词荟萃
If you were going to a restaurant and wanted a healthier option, 如果你去饭店，你想吃得健康一点， which would you choose, grilled or fried chicken? 你会选择哪种食品呢，烤鸡还是炸鸡？ Now most people would answer grill
TED演讲教育篇