由公路

例句：

1. 1. The city is connected by a series of highways.
   这个城市通过一系列高速公路相连。
2. 2. The car drove on the main highway.
   汽车沿着主干道行驶。
3. 3. The driver followed the expressway to reach his destination.
   司机沿着高速公路到达他的目的地。