For years, the hippo has been the leading candidate for the closest land relative because of its similar DNA and whalelike features.
多年来河马一直是主要
陆地最近亲动物选定代
，因为河马有
相似DNA
及有
类特征。
For years, the hippo has been the leading candidate for the closest land relative because of its similar DNA and whalelike features.
多年来河马一直是主要陆地最近亲动物选定代，因为河马有相似DNA及有类特征。
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