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1、Aformalletterofinvitationtoasymposium（研讨会）,forumorconferenceisdifferentfromapersonalletter.Itismoreliketheannouncementofanevent,informingtherecipientoftheaim,topicsandsponsor(s)oftheevent,andtheplaceandtimeitistobeheld.Usuallyaregistrationformandalistoftopicsareattachedtoit
2、.Datesforpapers,socialevents,andanintroductionoflocalsightseeingtours,etc.,arealsostated.LetterofInvitationDearColleague,Weinviteyoutoattendaninternationalsymposium（研讨会）,tobeheldinStockholm,Sweden,inSeptember1998,onstandardsfortheprotectionofpublichealthandtheenvironmentrel
3、ativetoradioactive（放射性的）wastedisposal.Theorganizers,theStockholmEnvironmentInstitute,theSwedishRadiationProtectionInstituteandtheUnitedStatesEnvironmentalProtectionAgency,arepleasedtobeco-sponsorsofthissymposium.Thedisposalandstorageofradioactivewasteisanissueofmajorconcern
4、.Thus,thereisanincreasingneedtodiscuss,developandfinallyworkoutthefundamentalstandardsforprotectionofpublichealthandtheenvironment.(Tobecontinuedonnextpage.)SampleSampleWeareconvincedthatthesestandardswillgainevenmoreattentioninthefuture.Theaimofthissymposiumistocontributes
5、ignificantlytothedevelopmentandunderstandingofsuchstandards.WehopethatyouwillfindtopicsofyourinterestandwearelookingforwardtoseeingyouinStockholm.Sincerelyyours,NicholasSonntagExecutiveDirector StockholmEnvironmentInstituteLars-ErikHolmDirectorGeneral TheSwedishRadiationPro
6、tectionInstituteLawrenceW.WeinstockActingDirector U.S.Environmental ProtectionAgencyExercisesEx.18Writealetterofinvitationtoaninternationalsymposiumoncitygarbagedisposal,simulatingtheframeworkandstructureofthesampleletterasmuchaspossible.ReferenceDearColleague/Sir/Madam,Wei
7、nviteyoutoattendaninternationalsymposiumoncitygarbagedisposaltobeheldinChengdu,China,inMay2003.TheEnvironmentInstituteofChinaandtheChengduMunicipalGovernmentarepleasedtobeco-sponsorsofthissymposium.Thedisposalofcitygarbageisanissueofmajorconcernforeverycityintheworld.Thus,t
8、hereisanincreasingneedtodiscuss,exchangeanddevelopeffectivewaysforgarbagedisposalw
