单词	tail coverts
释义	tail coverts plural noun : the feathers that cover the bases of the tail quills see duck illustration Word History First Known Use 1815, in the meaning defined above
随便看	nonbiologist nonbiologists nonbiting nonblack nonblacks nonboard nonbodies nonbonded nonbonding nonbook nonbooks nonbotanist nonbotanists nonbrachiating nonbrand nonbreakable nonbreathing nonbreeder nonbreeders nonbreeding nonbreedings nonbroadcast nonbroadcasts nonbroody nonbuilding

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