network of pipe lines

例句：

1. 1. The network of roads connects the city to the countryside.
   这条公路网络将城市与乡村相连。
2. 2. The network of roads is extensive and covers many areas.
   这条公路网络覆盖范围广泛，涉及许多地区。
3. 3. The network of cables provides power to the entire building.
   电缆网络为整个建筑提供电力。