单词：unformatted logic record
单词：unformatted logic record 相关文章
In Australia, its not just livestock hit hard by draught, but the next generation of farmers. At 24, Robert Watt, a farmer from Alectown, a region of Australia, has had seven seasons on the farm, but not one year of profit. He says the draught, plus
自然百科2016年
In Australia, its not just livestock hit hard by draught, but the next generation of farmers. At 24, Robert Watt, a farmer from Alectown, a region of Australia, has had seven seasons on the farm, but not one year of profit. He says the draught, plus
国家地理2008年
By Mario Ritter Broadcast: October 7, 2003 This is Doug Johnson with the VOA Special English Agriculture Report. Today we finish a two-part series. A listener in Brazil asked about 1)agroecology. This
VOA2003（下）-农业与经济
[全屏观看] 点击右键- 另存为 可保存这个Flash影片 Description: Link the whole farming community together to increase productivity!
Daily Free Games
By Peter Heinlein Addis Ababa 15 May 2008 Growing enough food to alleviate shortages in African countries is not easy, but an agro-ecologist in Ethiopia thinks he has the answer: bio-farming. The technique uses animal waste products to produce energy
VOA标准英语2008年（五月）
Researchers get same yields with fewer fertilizers, pesticides Steve Baragona | Washington, DC 18 May 2010 Fossil energy use was compared among different crop rotation systems in a field experiment conducted between 2003 and 2008 in Boone Co., Iowa R
VOA标准英语2010年(五)月