单词	hippopotamus
释义	hippopotamushippopotamus /ˌhɪpəˈpɑt̮əməs/ noun (plural hippopotamuses or hippopotami /-maɪ/) [countable] Etymology ETYMOLOGYhippopotamus Origin: 1500-1600 Latin Greek, from hippos horse + potamos river a large African animal with a large head, a wide mouth, and thick gray skin, that lives in and near water [Origin: 1500–1600 Latin, Greek, from hippos horse + potamos river]
随便看	E. coli ecological ecological footprint ecologically ecological pyramid ecological succession ecologist ecology e-commerce econ economic economical economically economic imperialism economics economic sanctions economies of scale economist economize economy economy class ecopolitics ecosystem ecoterrorism ecoterrorist

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