切尔诺贝利核辐射英语演讲PPT

Makepeacewiththeplanet.——TheChernobyldisasterwasanuclearaccidentthatoccurredon26April1986attheChernobylNuclearPowerPlantintheUSSR.（苏维埃社会主义共和国联盟）Itisconsideredtheworstnuclearpowerplantaccidentinhistory,anditistheonlyoneclassified（被分类的）asalevel7eventontheInternationalNuclearEventScale.（规模）TheChernobyl（切尔诺贝利）NuclearAccidentMainCausesOperating（运转）instructionsanddesigndeficiencies（不足）Operatorerror（失误）initially（最初的）faulted①Thereactorhadadangerouslylargepositivevoid（无效的）coefficient（系数）.②Amoresignificantflaw（缺点）wasinthedesignofthecontrolrods（权）thatareinsertedintothereactortoslowdownthereaction.Thedevelopersofthereactorplantconsideredthiscombinationofeventstobeimpossibleandthereforedidnotallowforthecreationofemergencyprotectionsystemscapableofpreventingthecombinationofeventsthatledtothecrisis.（危机）Theleakage（泄露）radiation（辐射）dustwithairblowingintothewesternregionofSoviet（苏维埃）Union,EasternEuropeandTheNordicScandinavian（北欧斯堪纳威亚半岛）Peninsula.Ukraine,BelarusandRussiaaretheMostpolluted.PollutionscalesAftermath1)Internationalspreadofradioactivesubstances2)Radioactiverelease3)Healthofplantworkersandlocalpeople4)ResidualradioactivityintheenvironmentMapofradiationlevelsin1996aroundChernobyl.•TheChernobylaccidentkilledmorethan30peopleimmediately,andasaresultofthehighradiationlevelsinthesurrounding20-mileradius（半径）,135,000peoplehadtobeevacuated（疏散）.•In2006,TheOtherReportOnChernobylpointedoutthereareabout4000peoplewilldiefromtheexcessiveradiation.TheresultantreleaseofradioactivitythreatensmanythousandsofpeoplealloverEuropewithcancer.Uptonow,themalformationfetus(畸形儿)stillbirthduetothelong-termeffectsofradioactivematerial.Theaccidentareaisstillcontaminated（污染）anduninhabitable（杳无人迹的）.Theonceprosperous（繁荣的）cityhasbecomea“ghostcity”Actions•April26,1986,over8tonsleakageofstrongradiation.Unit4wassubsequentlyreinforcedconcreteseal,thenamesarcophagus（石棺）Sarcophagushasbeeninusefornearly25years,nowithasbeentheappearanceofcracks.Ukrainehopesinthesarcophagusontheinstallationofa100-meterhighsteelarch石棺“已使用了近25年，现在它已经出现裂缝，乌克兰希望在”石棺“上安装高100米的钢拱。Makepeacewiththeplanet.Thanks!