any of numerous oval flattened aquatic beetles that swim by means of their fringed hind legs which act together as oars: family Dytiscidae
any of numerous similar aquatic insects: order Coleoptera
| 单词 | water beetle |
| 释义 | water beetlenounany of numerous oval flattened aquatic beetles that swim by means of their fringed hind legs which act together as oars: family Dytiscidae any of numerous similar aquatic insects: order Coleoptera |
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