单词：business cycle duration
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Water Cycle 水循环 All the oceans on earth are salty, while inland water is typically fresh. How does water become salty? We'll answer a listener's question -- today on Earth and Sky. DB: This is Earth and Sky. We recently visited the Austin Childr
(科普英语)Earth and Sky
Philadelphia Laundry Succeeds by Being Green When Gabriel Mandujano opened Wash Cycle Laundry in Philadelphia four years ago, the 26-year-old social innovator had three goals in mind: making a profit, developing community and staying green. Four year
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Mike出差刚回来，被时差折磨得痛苦不堪，向同事Larry咨询缓解时差的好办法。Larry说， Larry: Some people take herbal medicine, but there's really no solid proof that it works. Some people take sleeping pills and try to sle
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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
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Classical music fans in Beijing are now embracing a massive work-the complete cycle of Beethoven's 9 symphonies with The Deutsche Kammerphilharmonie Bremen. Paavo Jarvi, an internationally famous Estonian conductor, is the artistic director of the or
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