单词：phosphorus pentabromodichloride
单词：phosphorus pentabromodichloride 相关文章
Bluesman Tab Benoit Offers 'Medicine' for the Soul We've all heard that old saying music is medicine for the soul. Bluesman Tab Benoit took that advice to heart and named his latest album Medicine. The singer and guitarist Tab Benoit reveals his ever
VOA标准英语2011年(四月)
The little splints of wood which we call matches are made out of deal or pine wood which has been soaked in melted paraffin wax to make it burn more easily. 这种被我们称之为火柴的薄木片由欧洲赤松（松树）制成, 在液体的石蜡
英国学生科学读本
Have you ever had a problem getting a match to light? If so, you might be using the wrong type of match. There are actually two different types of matches: safety matches and strike-anywhere matches. 以前你点燃火柴时有没有点不着的时候呢
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AA: I'm Avi Arditti with Rosanne Skirble, and this week on WORDMASTER: a big week for talkers and listeners. RS: This Thursday, millions of Americans will gather with family and friends to celebrate Thanksgiving -- or Turkey Day, as many call it. Tha
词汇大师(Wordmaster)
Day 45 Promotion or Detour Jobs are like roads,some have fast speed limits,others require a slower pace.Some have nice scenery,others offen drudgery.Some lead up to mountains,other slam into dead ends.It maybe easy to decide which jobs to take with t
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经济学这门忧郁科学在这场乐观的讲演中大放异彩. 经济学家Alex Tabarrok认为自由贸易和全球化正把曾经分裂的世界塑造成一个共享创新的社会, 这个社会的未来会比任何人的预测都更加健康，幸
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By Stephanie Ho Washington 12 March 2007 Vice President Dick Cheney says a precipitous withdrawal from Iraq would be dangerous for the United States and for the entire Middle East. His comments came in Washington Monday in a speech to a gathering spo
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This is Scientific American's 60-Second Science, I'm Christopher Intagliata. Got a minute? Life on earth requires six basic ingredientscarbon, hydrogen, nitrogen, oxygen, sulfur and phosphorus. Those six elements are the building blocks for DNA and R
Scientific American(十二)月
Break out a fight and raise your arms. Skip those heartbeats, run, chase the illusion. The indifference of few destroys us all. Like rings from drops in a pool of blood we break like a sick single crop. And watch with bitter eyes, no sound, a frown,
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今天我们要讲的是，要是你和朋友一起出去吃饭，到最后由谁来付账的问题。在美国，要是一个朋友约你一起出去吃午饭，那当然由他付钱。然而，要是你
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This is the VOA Special English Agriculture Report. Hogs at an Ohio farm Research shows that waste from pigs that are fed a special kind of corn may help a farmer's crops. And it also may help the environment. Any farmer who raises swine knows that
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By Peter Fedynsky Moscow 18 July 2007 Officials in Ukraine are assessing the damage of a train crash in western Ukraine that sent huge clouds of burning phosphorus billowing into the air. The accident, which took place Monday, is raising health conce
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By Kurt Achin Seoul 22 October 2009 US Defense Secretary Robert Gates speaks during joint news conference in Seoul, 22 Oct 2009 The United States and South Korea have wrapped up an annual security meeting with assurances that South Korea is on track
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地道美语听力播客English as a Second Language Podcast (ESLPod)，是一家位于美国加州洛杉矶的英语教育研究机构推出的英文听力会话，于2005年7月23日首播， 主播Dr. Jeff McQuillan为南加州大学的语言学博士
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MARY LOUISE KELLY, HOST: Summertime brings algae blooms to many parts of the country - those mats of bright green organisms that can blanket waterways. In places like Florida's Lake Okeechobee, the blooms hurt tourism. They kill fish. They threaten w
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It first showed up in October 2011 on Kickstarter, the world's largest funding platform for creative projects. Then Romo quickly won people's hearts around the world. It's the world's first smart phone robot. An iPhone or an iTouch is his face and br
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Idiom: pick up the tab ( pay for ) Hit the book: Diva Sway Spotlight Adoration Magnify Stardom Sentiment The Diva We all have our inner divas. At some point, while dressing up for work or school, we had grabbed our hairbrush and swayed and belted out
趣味青春英语
The commercial potential for the stuffwhich soon became known as phosphorus, from Greek and Latin roots meaning light bearingwas not lost on eager businesspeople, but the difficulties of manufacture made it too costly to exploit. An ounce of phosphor
万物简史
对你而言，智能手机可能就像你的朋友。但是真正的朋友会时不时给你一个笑脸。在TED2013大会上 Keller Rinaudo 展示了 Romo，一种由智能手机控制的迷你机器人，可以陪着你散步，可以帮你在桌子
TED公开课:重释机器
Matches Striking matches, on this Moment of Science. Have you ever had a problem getting a match to light? If so, you might be using the wrong type of match. There are actually two different types of matches: safety matches and strike-anywhere matche
英语听力文摘 English Digest