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犀牛角和象牙被砍掉后还能再长出来吗？
source link: https://tech.sina.com.cn/d/a/2019-04-03/doc-ihsxncvh7817814.shtml
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新浪科技讯北京时间4月3日消息，据国外媒体报道，犀牛的角长得像独角兽，大象的牙长得像一丛巨大、结实的胡子。虽然犀牛角和象牙赋予了这两种生物其标志性的外表，但也是它们濒危的主要原因。简单来说，偷猎者和猎人们为了犀牛角而猎杀犀牛，很多人（错误地
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