美国城市里没有街区是我在晚上害怕而不敢单身前往的。
There is no sectionof an American city which I would fear to go into alone at night.
比方说，在美国前十大城市里，过去十年房价上升171%，比全国范围的平均涨幅高很多。
In America's top-ten cities, for example, prices are up 171% in the past ten years, much more than the national average.
在美国的大城市里，大多数都有很齐全的公共交通系统。
The public transportation systems in most big cities in America are very good.
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