[化] 一氯化二氯四氨络钴

VOA标准英语2014--新的太阳能电池减少生产中对环境的危害

New Solar Cell Minimizes Environmental Risks in Manufacturing Process 新的太阳能电池减少生产中对环境的危害 Scientists in England report the development of a new solar cell that minimizes environmental risks in the manufacturing proc

发表于:2018-12-08 / 阅读(93) / 评论(0)

VOA标准英语2014年(六月)

外研社新课标高中英语选修8MODEL4--04Reading pra

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 ！

发表于:2019-01-10 / 阅读(201) / 评论(0)

外研社新标准高中英语选修8

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外研社新标准高中英语选修8

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外研社新标准高中英语选修9

美国国家公共电台 NPR Retailers Plan To Clear Deadly Paint Removers From Shelves, As EPA Delays Ban

DAVID GREENE, HOST: Families across the United States are fighting with the federal government over a deadly chemical. Dozens of people have died from inhaling methylene chloride. This is an ingredient in common paint removers. NPR's Rebecca Hersher

发表于:2019-01-17 / 阅读(83) / 评论(0)

2018年NPR美国国家公共电台11月

科学美国人60秒 SSS 2016-1-1

Every winter some twenty million tons of salt are dumped on America's road.That sodium chloride melts the ice, so it prevents its formatin, helping to prevent accidents. But road salt has its downside. This is not very economical because salt is main

发表于:2019-01-20 / 阅读(134) / 评论(0)

2016年Scientific American(一)月

英语听力：自然百科为什么海水是咸的？

This week on Why Tell Me Why, we are finding out why the oceans are so salty. So the oceans are salty because the oceans have been around, lets say, for over five hundred million years. And over the course of time what we found out is that weve alway

发表于:2019-01-22 / 阅读(94) / 评论(0)

自然百科2009年

EDUCATION REPORT - Learning Disabilities, Part 4: Dyspraxia

EDUCATION REPORT - Learning Disabilities, Part 4: Dyspraxia By Nancy Steinbach Broadcast: Thursday, February 26, 2004 This is Steve Ember with the VOA Special English Education Report. People who have

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教育与新闻

ESL Podcast 390 – Dietary Restrictions and Preferences

Tony: Who did you invite over for dinner Saturday? Carmela: I invited Keith, Sung, Stephanie, and Luis. Tony: You didnt! Carmela: I did. Why? Tony: Youre going to have a hard time cooking for them. Keith is a vegan and only eats food thats organic. S

发表于:2019-02-04 / 阅读(85) / 评论(0)

地道美语播客

原来这就是网上那些神一般的SEO

This is Search Engine Optimization Explained by Common Craft. 本期介绍搜索引擎优化。 Imagine for a minute that youre a librarian, but not a normal one. Youre a librarian for every book in the world. 假设你是名超级图书管理员，管

发表于:2019-02-05 / 阅读(68) / 评论(0)

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本期内容： A stolen bottle of vodka thought to be the world's most expensive at $1.3m has been found empty on a construction site, Danish police say.The bottle, made from gold and silver and with a diamond encrusted cap, was on loan to a Copenha

发表于:2019-02-11 / 阅读(73) / 评论(0)

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英语听书《海底两万里》第170期第12章一切都用电(3)

First off, I'll mention that at the bottom of the sea there exist veins of zinc, iron, silver, and gold whose mining would quite certainly be feasible. 首先，我对您说，海底有锌、铁、银、金等矿藏，开发并不是不可能的事。

发表于:2019-02-25 / 阅读(152) / 评论(0)

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administration building

adrenocortical insanity

advancde stage of cracking