雅思阅读中常见的难句解析：定语从句(6)

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雅思阅读中常见的难句解析：定语从句(6)
+ U0 ~* w: W- xSmart cards,which can carry as much as 80 times more information on them than conventional cards with a magnetic stripe,are already widely used in European countries where centralized banks can roll out new services on a nationwide basis.转自:考试网 - [Examw.Com]
　　要点 本句为简单复合句。句架为Smart cards， which ……， are already widely used in European countries where……。which为关系代词，引导非限制性定语从句，修饰smart cards;where 为关系副词，引导定语从句，修饰countries.nationwide：全国范围内的。roll out：本意为“展开(卷起之物)”，此处为引申义，指展开工作。
　　译文 智能卡载有的信息量是普通磁卡信息载量的80多倍，已经在欧洲各国广泛使用，因而使欧洲各国中央银行得以在全国范围展开新型的服务。