单词	back focus
释义	back focus noun : the distance from the rear glass surface of a photographic lens to the focal plane when the lens is focused on a very distant object Word History First Known Use 1868, in the meaning defined above
随便看	lymphomatosis lymphomatous lymphopoieses lymphosarcoma lymphosarcomas lymphosarcomata lymphosporidioses lymphosporidiosis lymphous lymphs lyn lyncean lynch lynch law lynch mob Lynchburg lynchburgs lynched lyncher lynchers lynches lynchets lynching lynchings lynchpin

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