但这一进步又带来了新问题：这么多的小轿车使交通变得越来越糟，空气污染也很严重。
But this progress brought new problems: With all the cars, traffic was getting worse and worse, and pollution was ter-rible.
但这一进步又带来了新问题：这么多的小轿车使交通变得越来越糟，空气污染也很严重。
But this progress brought new problems: With all the cars, traffic was getting worse and worse, and pollution waster-rible.
但这一进步又带来了新问题：这么多的小轿车使交通变得越来越糟，空气污染也很严重。
But this progress brought new problems: With all the cars, traffic was getting worse and worse, and pollution waster-rible.
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