【难句】4. Visit many online sites to research a car, and they will sell your name immediately to local dealerships which will then harass you in the old-fashioned way. (The Economist May 27, 2006).

【结构分析】以and为切入点，本句包含两个并列分句。注意前一分句省略了和后一分句相同的主语they(指代网络销售商)。后一分句中，they will sell your name immediately to local dealerships是主句，关系代词which引导定语从句which will then harass you in the oldfashioned way，which指代上文的一整句话。

【参考译文】网络销售商通过访问大量的网站去寻找一部车，然后就会把你的名字提供给当地的经销商，这又会让你重回到以前那种购车模式所带来的困扰中。