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   第三章 (第14/17页)

tionsontherightsofauthardingtheirworks.Theselimitationsincludebutarenotlimitedto:

    1.**DurationofProte:**Chtproteislimitedtoacertainperiod,afterwhichtheworkehepubliainandbefreelyusedbyanyone.

    2.**FairUse:**Certainusesofchtedworksmaybeallowedwithouttheauthor''''spermission,suchasforcriticism,ent,newsrep,teag,schorship,orresearch.

    3.**pulsoryLises:**Insomecases,goversmaygrantpulsorylises,allowingotherstouseachtedworkwithouttheauthor''''ssent,usuallyinexgeforpensation.

    4.**Publiain:**Worksthathaveehepubliaiprotectedbychtandbeusedfreelybyanyoneforanypurpose.

    5.**StatutoryLises:**Goversmayestablishstatutorylisesforcertaintypesofuses,suchasbroadcastingorpublicperform
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