单词：soil algae
单词：soil algae 相关文章
Broadcast: August 4, 2003 This is Bill White with the VOA Special English Development Report. Safe drinking water has always been rare and valuable. Throughout the world, drinking water has to be stor
VOA2003（下）-发展与科学
By Gary Garriott Broadcast: July 29, 2003 This is Bill White with the VOA Special English Agriculture Report. Soil conservation efforts protect soil from wind and water that can blow or wash it away.
VOA2003（下）-农业与经济
I took this picture in the Tihamah Desert while 25 millimeters -- that's an inch of rain -- was falling. 这张照片是我在提哈迈沙漠拍的下着25毫米（一英寸）的雨。 Think of it in terms of drums of water, each containing 200 lite
TED演讲教育篇
Mars Rover to Begin Taking Soil Samples This Week Jessica Berman NASA engineers say the Mars rover will begin taking its first soil samples as soon as it departs the landing platform . Engineers say t
VOA2004（上）--各类新闻
DEVELOPMENT REPORT – January 7, 2002: Storing Drinking Water By Gary Garriott This is the VOA Special English Development Report. Safe drinking water has always been rare and valuable. Throughout th
农业与发展
Bangkok Hotel Takes Algae from Rooftop to Buffet BANGKOK On his flaming wok, a chef in a Bangkok hotel is adding an unusual ingredient to several dishes that will be set out on the buffet. It is a nutritional algae, known as spirulina, cultivated jus
VOA常速英语2013年(九月)