| 单词 | Hirundo rustica |
| 释义 | Hirundo rustica (once / 472773 pages) n WORD FAMILY Hirundo rustica n common swallow of North America and Europe that nests in barns etc. Syn|Hyper barn swallow, chimney swallow swallow small long-winged songbird noted for swift graceful flight and the regularity of its migrations |
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