| 单词 | 龙虱 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔diving beetle〕Any of various predatory aquatic beetles of the family Dytiscidae.龙虱：龙虱科的食肉水栖甲虫美国传统〔water beetle〕Any of various aquatic beetles, especially of the family Dytiscidae, having a smooth oval body and flattened and fringed hind legs adapted for swimming.水生甲虫：各种水生甲虫之任一种，尤指龙虱科生有平扁卵圆之身体和适于游泳的扁平带缘毛的后腿美国传统 |
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