有最年夜象群的博茨瓦纳丘比国家公园 The Chobe National Park, which is the second largest national park in Botswana and covers 10,566 square kilometres, has one of the greatest concentrations of g... /
2010-06-08 / 查看
1148 次
双语:使用DNA申明技能保护非洲年夜象 WASHINGTON - The complex science of DNA analysis is now helping protect elephants by showing police and conservationists the source of black-market ivory. T... /
2010-06-08 / 查看
860 次