原儿茶醇;3,4-二翔苄醇

VOA慢速英语2012 Agriculture Report - Irrigation Pioneer Wins World Food Prize

Agriculture Report - Irrigation Pioneer Wins World Food Prize 农业报道 - 滴灌技术开创者获得世界粮食奖 From VOA Learning English, this is the Agriculture Report in Special English. 这里是美国之音慢速英语农业报道。 A r

发表于:2018-12-16 / 阅读(53) / 评论(0)

2012年VOA慢速英语(十)月

SSS 2008-09-24

This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute. Theres a Native American site in Ohio that appeared to be a fort. But recent discoveries by archaeologists at the University of Cincinnati show thats n

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VOA标准英语2012--Small-Scale Irrigation Nets Large-Scale Payoff

Small-Scale Irrigation Nets Large-Scale Payoff A new study shows small-scale irrigation systems could boost farmers incomes by billions of dollars in sub-Saharan Africa and South Asia. The research was discussed at the World Water Week conference in

发表于:2019-01-13 / 阅读(77) / 评论(0)

VOA标准英语2012年(八月)

VOA标准英语2012--Irrigation Pioneer Wins World Food Prize

Irrigation Pioneer Wins World Food Prize Hillels orchards near his home in Israel are innovation in action. Each tree row is fed by plastic tubes which drip water at the base of the tree. Irrigating drop by drop - called drip irrigation - has transfo

发表于:2019-01-14 / 阅读(49) / 评论(0)

VOA标准英语2012年(十月)

AGRICULTURE REPORT - Irrigation and Salt

AGRICULTURE REPORT -May 21, 2002: Irrigation and Salt By George Grow This is the VOA Special English AGRICULTURE REPORT. Irrigation is the watering of land by other than natural methods. Irrigation pr

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农业与发展

China to spend massively on farmland improvement

China to spend massively on farmland improvement BEIJING, Sept. 6 (Xinhua) -- The government will spend 37.36 billion yuan(about 5.93 billion U.S. dollars) to improve the quality of farmland this year, the Ministry of Finance said Thursday. The fund,

发表于:2019-01-31 / 阅读(65) / 评论(0)

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