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的陆地最近亲动物的选定代
，因为河马有其相似的DNA
及有鲸类特征。
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的陆地最近亲动物的选定代，因为河马有其相似的DNA及有鲸类特征。
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