有机金属化学淀积法

Fuel Cell Cost-Cutting

By Caty Weaver Broadcast: July 25, 2003 This is Bill White with the VOA Special English Environment Report. Researchers say they have found a way to reduce the cost of some 1)fuel cell production. The

发表于:2018-12-01 / 阅读(183) / 评论(0)

VOA2003（下）-环境与健康

WWOOF: World-Wide Opportunities on Organic Farms

By Mario Ritter Broadcast: July 8, 2003 This is Steve Ember with the VOA Special English Agriculture Report. Recently, a listener in Nigeria told us about an organization called World-Wide Opportuniti

发表于:2018-12-07 / 阅读(133) / 评论(0)

VOA2003（下）-农业与经济

【英语时差8,16】钻石能“永远”的秘密

Why Diamonds Really Are Forever Diamonds are forever they say, and this is why: diamonds are the hardest substance known to exist. Nothing would scratch or damage a diamond，While a diamond can scratch any other material on the earth. Everything is

发表于:2018-12-27 / 阅读(84) / 评论(0)

英语时差8，16

Listen this way听力教程第二册-11

发表于:2018-12-27 / 阅读(146) / 评论(0)

Listen this way听力教程

60秒科学:Murchison Meteorite's Chemical Bonanza

Murchison Meteorite's Chemical Bonanza The 1969 Murchison meteorite was known to harbor complex organic compounds, but a new analysis in Proceedings of the National Academy of Sciences finds that it may also contain millions of chemicals and shed lig

发表于:2019-01-02 / 阅读(188) / 评论(0)

60秒科学

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

发表于:2019-01-03 / 阅读(169) / 评论(0)

英文语法词汇

如何获得6块腹肌

Every man dreads and awaits the albatross of the elusive 6-pack abdomen. Call it the ills of Pornography or heightened ideals of women, but every man is being subjected to the prospect of having the perfect body and a ripping 6-pack is the right way

发表于:2019-01-08 / 阅读(188) / 评论(0)

英语小短文

VOA标准英语2010-African Farmers Growing Organic Foods for

A melon field is pictured at a farm in the village of Djilakh, 80km south of Dakar, Senegal on 22 Apr 2008 (file photo) African farmers are making more money producing organically grown crops for European markets, where demand for healthier food is g

发表于:2019-01-11 / 阅读(114) / 评论(0)

VOA标准英语2010年(四)月

美国国家公共电台 NPR NASA's Curiosity Rover Finds Chemical Building Blocks For Life On Mars

DAVID GREENE, HOST: This seems big. Scientists say for the first time they have clear evidence that the chemical building blocks of life exist on Mars. So is this the moment we can say there is life on the red planet? Well, NPR's Joe Palca says not y

发表于:2019-01-17 / 阅读(88) / 评论(0)

2018年NPR美国国家公共电台6月

英语听力文摘 English Digest 438、为什么盐会结块？

Why Salt Clump s 为什么盐会结块？ You probably noticed that sometimes the salt gets clump y . If its really humid outsidethere may even be condensation on top of the salt shaker. The reason this happens is that salt is hygroscopic . Hygroscop

发表于:2019-01-26 / 阅读(106) / 评论(0)

英语听力文摘 English Digest

AGRICULTURE REPORT - Chemicals on Organic Food

AGRICULTURE REPORT – July 30, 2002: Chemicals on Organic Food By George Grow (Photo -Scott Bauer) This is the VOA Special English AGRICULTURE REPORT. Farmers who grow organic food do not use chemica

发表于:2019-01-30 / 阅读(137) / 评论(0)

农业与发展

英文歌曲:Chemical Rush

Chemical Rush Brian Mcfadden Chess game, Im the pawn Youre the queen, Im the throne Take me out tonight Make your move, pick and choose Anywhere Im gonna lose Give it to me black or white Feel it coming on Like a pulse in my head Sending chills right

发表于:2019-02-07 / 阅读(128) / 评论(0)

好听的英文歌曲

Vast water vapor beyond solar system found

BEIJING, Oct. 21 (Xinhuanet) -- A team of European researchers announced that they have found vast water vapor out of our solar system, according to a study in the U.S. journal Science Friday. Using Herschel Space Observatory, a European Space Agency

发表于:2019-02-09 / 阅读(131) / 评论(0)

英语新闻

打工姐妹花第一季第205期:取证会开始之前

We'll be doing the deposition in here. 取证会将会在这里举行 Oh, wow, this is exactly how it looks on Law And Order! 哇，跟《法律与秩序》里看起来一摸一样呢 There's the tiny typewriter thing where the actress who never gets

发表于:2019-02-17 / 阅读(106) / 评论(0)

打工姐妹花第一季

打工姐妹花第一季第198期:哈钦森先生来访(2)

Caroline, I'm sorry to drag you into this, 卡洛琳，抱歉把你牵扯进来 but the prosecutor is asking for you to give a deposition regarding your father's case. 但检察官要求你为你父亲的案子出席取证会 Anything I can do to hel

发表于:2019-02-17 / 阅读(168) / 评论(0)

打工姐妹花第一季

英语歌曲:音乐+爱情的化学反应-Chemical Rush

音乐+爱情的化学反应：Chemical Rush Artist：Brian Mcfadden Song：Chemical Rush Chess game, Im the pawn Youre the queen, Im the throne Take me out tonight Make your move, pick and choose Anywhere Im gonna lose Give it to me black or white F

发表于:2019-02-17 / 阅读(137) / 评论(0)

流行英文歌曲

英语摇滚:音乐+爱情的化学反应：Chemical Rush

音乐+爱情的化学反应：Chemical Rush 还是Brian Mcfadden小编对BB的新专辑实在不能不执着啊~这首依旧是混杂了电子风的Chemical Rush，稍微有些中规中矩，和专辑中电音味道更重的歌比起来，有些收敛

发表于:2019-02-18 / 阅读(136) / 评论(0)

英文摇滚歌曲

万物简史第277期:砰!(12)

This involved bombarding samples with neutrons in a small nuclear reactor and carefully counting the gamma rays that were emitted; 这项技术包括在一个小型核反应堆里用中子轰击样品，仔细计算释放出来的射线。 it was ext

发表于:2019-02-25 / 阅读(184) / 评论(0)

万物简史

雅思分类词汇：环境资源相关(十二)

工业INDUSTRY 工业生产过程Industrialprocesses 制铝工业Aluminiumindustry 适用技术Appropriatetechnology 高炉Blastfurnaces 纤维素Cellulose 化学工业Chemicalindustry 清洁技术Clea

发表于:2019-02-25 / 阅读(148) / 评论(0)

英文语法词汇

英语听力文摘 English Digest 267、火是什么？

What Is Fire? 火是物质燃烧过程中散发出光和热的现象，是能量释放的一种方式。火焰分为焰心、中焰和外焰，温度由内向外依次增高。燃烧过程必须有可燃物、燃点温度、氧化剂三项并存，缺一

发表于:2019-03-09 / 阅读(293) / 评论(0)

英语听力文摘 English Digest

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accepted limit

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bistable flip-flop circuit