Major highway projects will further extend and reinforce the main road network.

大型公路工程将进一步扩大及巩固主要道路网。

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The classification and measuring procedure for geometrical objects of a city will be simplified if its main road network could be automatically extracted from aerial remote sensing images.

如果能自动地从航空遥感图像中提取出道路网，将会简化城市地物目标的分类和测量过程。

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According to Mr Poole, the main remedy for present problems will be to make better use of the existing road network, most of which was built between the 1950s and the 1970s.

普尔表示，当前问题的主要解决方法，将是更好地利用现有公路网络。美国的公路多数是在上世纪50年代和70年代修建的。

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Derbyshire County Council said keeping the main road network clear was a top priority.

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Everywhere I have stopped, people have told me that they took what they needed and guided the relief vehicles to villages that are furthest from the main road network.

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