| 单词 |
under-down |
| 释义 |
ˈunder-down [under-1 5 c.] The down below the outer feathers of birds.
1842J. B. Fraser Mesopot. & Assyria xv. 363 Cold winters..have every where the effect of lengthening the hair or fleece of animals, or of supplying them with an under-down. 1857Dufferin Lett. High Lat. (ed. 3) 42 Where the eider ducks..build nests with the soft under-down plucked from their own bosoms. |

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