翻译练习参考译文.doc

文档介绍：Exercise1Fiber-opticlineswillformmostofthebackboneoftheinformationhighway,-ableismadeoflong,thinkstrandsofglassratherthanwire,,engineerscancrammuchmoredataintofiber-,forexample,canhandleamind-boggling5,000videosignalsormorethan500,,becauseglassisaninherentlymoreefficientmediumfortransmittinginformationthanothermaterials,afiber-opticlinecantransmitasignalthousandsofmileswithoutmuch“signalloss”.Fiber-able,simplyput,“pression”–avarietyofmethodsforreducingtheamountofdigitalcode(streamsofonesandzeros)neededtorepresentapieceofinformation–whetheritisadocument,astillpicture,,,forexample,pletelyfilla100-,pressed,,forexa