单词 | uropygial gland |
释义 | uropygial gland (once / 1313257 pages) n WORD FAMILY uropygial gland USAGE EXAMPLESAmong the substances produced by birds are the secretions of the uropygial gland, which may be pigmented orange, red or yellow. US News(Oct 27, 2010) They then looked for the pigments that may tinge the plumage both in the secretions of the uropygial gland and on the surface of feathers. US News(Oct 27, 2010) n oil-secreting gland situated at the base of the tail in most birds Syn|Hyper preen gland oil gland a gland that secretes oil |
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