单词：metabolism in soil animals
单词：metabolism in soil animals 相关文章
Text Is there anything we can learn from deer? During the
大学英语精读第四册
This is the VOA Special English Agriculture Report. To call something marginal means it is not very good. Farmers have their own way to define marginal land: It is the last to be planted under good conditions, and the first to be avoided under poor c
VOA慢速英语2007年（三）月
AGRICULTURE REPORT - Farming Marginal Lands By Mario Ritter / Broadcast: Mon, 5 Nov 2007 16:00:00 UTC This is the VOA Special English Agriculture Report. An Australian farmer stands on land damaged by lack of rain last year To call land marginal mea
VOA慢速英语2007年（十一）月
This is the VOA Special English Agriculture Report. When is a plant considered a weed? Experts at Penn State University have a simple answer: When the undesirable qualities outweigh the good qualities. Consider that crops generally produce several hu
2010年VOA慢速英语(八)月
AGRICULTURE REPORT - Farming on the Edge: Getting the Most Out of Marginal Lands By Mario Ritter Broadcast: Tuesday, August 02, 2005 I'm Barbara Klein with the VOA Special English Agriculture Report.
农业与发展
By Lisa Schlein Geneva 14 May 2008 Scientists say new evidence links certain chemicals to the development of obesity. About 2,500 international experts are attending the 16th European Congress on Obesity in Geneva. Lisa Schlein reports for VOA the pa
VOA标准英语2008年（五月）