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1、大家论坛职称英语http://club.topsage.com/forum-109-1.html大家论坛职称英语版块:http://club.topsage.com/forum-109-1.htmlSince2006,manylaboratorieshavebeenexploringotherkindsofmetamaterialsthatdon'tinvolvejustvisiblelight.Infact,scientistsarefindingthatalmostanykindofwave
2、mayrespondtometamaterials.AtthePolytechnicUniversityofValenciainSpain5,JoseSanchez-Dehesaisworkingwithacoustics,orthescienceofsound.Justasaninvisibilitycloakshuffleswavesoflight,an"acoustic"cloakwouldshufflewavesofsoundinawaythat'snotfoundinnature.In
3、anorchestrahall,forexample,anacousticcloakcouldredirectthesoundwaves--sosomeonesittingbehindacolumnwouldhearthesameconcertastherestoftheaudience,withoutdistortion.Sanchez-Dehesa,anengineer,recentlyshowedthatit'spossibletobuildsuchanacousticcloak,thou
4、ghhedoubtswe'llseeoneanytimesoon."Inprinciple,itispossible,"hesays,butitmightbeimpossibletomakeone,headds.Otherscientistsarelookingintowaystouselargermetamaterialsasshieldsaroundislandsoroilrigs6asprotectionfromtsunamis.Atsunamiisagiant,destructivewa
5、ve.Themetamaterialwouldredirectthetsunamiaroundtherigorisland,andthewavewouldresumeitsjourneyontheothersidewithoutcausinganyharm.词汇:cloak/kləuk/n.斗篷,披风metamaterial/,metəmə'tiəriəl/n.超材料full-fledged/'ful'fledʒd/adj.完全成熟的,完全合格的hyperlens/'haipəlenz/n.超透
6、镜acoustics/ə'ku:stɪks/n.声学tsunami/tsu'nɑ:mi/n.海震,海啸注释:1.Invisibilitycloaks:隐形衣。在《哈利·波特与死亡圣器》(HarryPotterand大家论坛职称英语http://club.topsage.com/forum-109-1.htmltheDeathlyHallows)一书中,哈利通过邓布利多的转交继承了他父亲的隐形衣。该书是英国女作家J.K.罗琳创作的哈利’.波特系列小说的第7部。2.…haditnotbeenfort
7、hedevelopmentofmetamaterials:……如果超材料尚未得到开发的话。该句使用的是虚拟过去时的倒装结构。虚拟过去时表示与过去事实相反的假设;因为是倒装结构,所以将情态动词had提到主语之前。如使用正常语序,该句可写为:…ifithadnotbeenforthedevelopmentofmetamaterials.3.“meta”meansbeyond,andmetamaterialscandothingsbeyondwhatweseeinthenaturalworld一一li
8、keshufflelightwavesaroundanobject,andthenbringthembacktogether:“meta”的词义是“超越”,metamaterials(超材料)能做出我们在自然界看不到的事情,例如将光波移动到某个物体周围,然后将光波全部收回。4.LouisianaTechUniversityinRuston,Louisiana:路易斯安那理工大学,位于路易斯安那州拉斯顿市。该校为公立大学,1894年建校,是美国最为重要的研究型大学之一。5.thePolytechn