单词	rough-winged swallow
释义	rough-winged swallow noun : a swallow of the American genus Stelgidopteryx or of the African genus Psalidoprocne having the outer web of the first primary developed into a series of minute hooks Word History First Known Use 1838, in the meaning defined above
随便看	e-cycled e-cycles e-cycling E-flat E-flat major E-flat minor e-flats e-mail e-mailed e-mailer e-mailers e-mailing e-mails e-reader E-sharp E-sharp major E-sharp minor e-sharps e-tail e-tailer e-tailers e-tailing e-waste e-zine E. coli

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