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。
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。
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