单词：cyclopropyne
单词：cyclopropyne 相关文章
Fire Regime 火 Fire was a creation of life -- born from oxygen and organic matter -- ignited by lightning. Thus fire has been a fundamental feature of the Earth for at least 400 million years. A scientist talks about fire -- today on Earth and Sky.
(科普英语)Earth and Sky
Fire Cycle 火灾规律 The El Nino phenomenon of 1997-98 unleashed torrential rain in some parts of the world, while creating abnormally dry conditions in others. And it sparked record numbers of wildfires. Learn more about climate and wildfire -- toda
(科普英语)Earth and Sky
Oum Sok began working as a cyclo driver when he was 18. He says the city has become very expensive over the years, making it much harder to earn a living. New York has its yellow cab. London has its red bus. But Phnom Penh has its cyclo - a three-whe
VOA标准英语2010年(六)月
Education Minister Christopher Pyne has denied he offered to help James Ashby in his sexual harassment claim against former Speaker Peter Slipper. Mr. Ashby has told 60 Minites that Mr. Pyne offered to find him a lawyer and assured him a job and warn
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Future of 8000 Australian steel workers around Australia hangs in the balance this morning as administrators of Arrium hold urgent talks with politicians. Arrium owns more than 4 billion dollars. The Opposition leader Bill Shorton says a nationalisti
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