| 单词 | 燕科 |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔swift〕Any of various small, dark, insect-eating birds of the family Apodidae, related to the hummingbirds and noted for their long, strong wings and swift flight.褐雨燕：燕科的各种捕食昆虫的黑色小鸟，与蜂鸟有亲缘关系，因其长而强劲的翅膀和快速飞行而著称美国传统 |
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