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世界上最后一头雄性北方白犀牛被实施安乐死
source link: http://tech.sina.com.cn/d/a/2018-03-20/doc-ifysmsru6074893.shtml
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中新网3月20日电据外媒报道，肯尼亚研究人员称，由于健康状况“明显恶化”，世界上最后一头雄性北方白犀牛“苏丹”在19日被实施安乐死。肯尼亚奥尔佩杰塔自然保护区称，45岁的“苏丹”健康状况严重恶化，其肌肉和骨骼已经退化，皮肤有很大的伤口，而且
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