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f. < trouble, pains, exertion >; 'operam dare', with dat., < to word hard at >; 'est operae pretium', < it is worth while >; 'opera mea', < thanks to me >. Transf. < time for work; work done >; in pl. < laborers, workmen >, also < mobsters, gangsters >. スポンサード リンク
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