highway network planning

例句：

1. 1. The highwaynetwork planning is crucial for the development ofthe city.
   高速公路网络规划对于城市的发展至关重要。
2. 2.The new highway network planning will greatly improvetransportation efficiency.
   新的高速公路网络规划将大大提高交通效率。
3. 3. The government has been working on ahighway network planning project for several years.
   政府已经花了几年时间在一项高速公路网络规划项目上。