单词	allopreen
释义	allopreen verb, transitive + intransitive al·​lo·​preen ˈa-lə-ˌprēn  allopreens; allopreened; allopreening of a bird : to preen or groom the skin or feathers of another bird On other occasions in succeeding weeks the female allopreened her mate, who sometimes solicited by putting his head down. Lawrence Kilham, The American Crow and the Common Raven, 1991 Allopreening in birds is usually directed at the top of the head, a part of the body not easily reached by the recipient. James F. Wittenberger, Animal Social Behavior, 1981 Word History Etymology allo- + preen entry 3 First Known Use 1965, in the meaning defined above
随便看	Spenserian stanza spenserians spensers spenses spent spent acid spent lye spent oxide speos speoses Speotyto sper sperate spere Spergula spergulae Spergularia spergulariae spergularias spergulas sperling sperlings sperm sperm bank sperm candle

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