单词：isolation technics
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Chad Bouchard | Dili 30 January 2010 East Timor is one of the few remaining countries where leprosy is endemic, and one of only two in Asia where it has yet to be eliminated. The government has declared war on leprosy, and vows to eliminate it this y
VOA标准英语2010年(一月)
Agriculture Report - Grow It Yourself: Diving Into Aquaponics 农业报道 - 生态水培技术 This is the VOA Special English Agriculture Report. 这里是美国之音慢速英语农业报道。 Aquaponics is the idea of producing vegetables and fi
2012年VOA慢速英语(二)月
Aquaponics Could Signal Future of Food Imagine growing vegetables and fish in the same space. Thats the idea behind aquaponics, a marriage of fish farming and soil-less plant cultivation in a single, sustainable closed system. Supporters believe aqua
VOA标准英语2012年(一月)
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STEVE INSKEEP, HOST: Some people with hearing loss want to change the rules so they can buy hearing aids over the counter at a local pharmacy. These would be stylish earbuds that can help with mild to moderate hearing problems. Here's NPR's Patti Nei
2017年NPR美国国家公共电台4月
Iranian state television on Thursday released the first images of what it said was a U.S. unmanned reconnaissance drone downed on Sunday along Iran's eastern border after it made a brief incursion into its airspace. The footage shows Iranian military
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