VOA慢速英语2015.06.15
[audio]http://sound.yywz123.com/tingbbs/voa/voa20150615.mp3[/audio]As a result, Mr. Bruggeman says there is reduced nitrogen from the fertilizer after the harvest. This helps nature.Romain Faroux says farmers use information gathered by the Agridrone to place fertilizer only in areas where it was needed. ______________________说农民根据无人机检测,验收的信息来想所需区域投放化肥.这样既能节省钱还能减少污染.Mr. Bruggeman表示,收获后的肥料中含氮量减少,有助于土壤恢复._______________________
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