How do you get there? You go to go here, here and these could be busy roads, and so parents don't want to do it because of safety reasons, so you see how--when the country used to be laid out in a grid, like say New York City still is today, then people walk to get to places.

那要怎么才能去呢,你得绕道这里,还有那里的繁忙路段,出于安全原因家长们不允许孩子们这么做,可以看到,规划为网格状道路的地区,比如依旧保留了传统规划的纽约,人们出行是靠步行

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Investment shifted to such aspects as improving system automation, digitalized grid construction, and reliability and safety.

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Power generation operates in a free market (subject to all the usual rules on safety etc) and the price which the grid can charge for carrying the power is regulated.

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But in 2005, controversy blighted the race as a result of the Michelin tyre safety row which meant that only six cars were on the starting grid - those of Ferrari, Jordan and Minardi.

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