About 7 million free tickets, one for each permanentresident household in Shanghai, would be offered to thank people for supporting the event, Yu said.

　　七百万张免费门票将发放到上海的千家万户，每家一张，以表达对上海人民支持世博的感激之情。

　　Each household will receive a 200-yuan (US$29.30) public transport card commemoratingthe event as another bonus.

　　每家还将获赠一张200元人民币的交通卡。

　　"Shanghai residents sacrificed a lot in preparations for the Expo," Yu said. "We want to thank them for their understanding and support."

　　“上海人民为准备世博付出了很多，我们要感谢他们的理解和支持。”

　　To copewith huge Expo crowds, the city has invested heavily in traffic infrastructureto dig new Metro lines and tunnels, expand roads and renovatekey facilities.

　　为解决交通问题，上海在交通设施方面下了大工夫，开辟了新的地铁线和隧道线，加宽了道路，改造了一些关键设施。

　　Since 2005, Shanghai has built eight new Metro lines and extended existing lines. By the end of April, Shanghai's Metro and light rail length will increase to 420 kilometers, more than four times that of 2005.

　　自05年起，上海开通了8条新地铁线。今年4月底，上海的地铁和轻轨总线路长度将达到420公里，是05年的四倍多。

　　Yu said locals have had to suffer traffic congestion, noise and heavy dust from construction.

　　俞正声说，当地居民不得不忍受交通堵塞以及施工过程中的噪音和尘土。