| 单词 | family sirenidae |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔siren〕Any of several salamanders of the family Sirenidae, such as the mud eel, having an eellike body, permanent external gills, small forelegs, and no hind limbs.（海牛类的）蝾螈：一种木鳗属动物，例如泥鳗，其有鳗状的身体，有时有一外部腮和小前肢，但无后肢美国传统 |
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