highway service facilities

例句：

1. 1. The highway service facilities areessential for the smooth operation of the highway.
   高速公路服务设施对于高速公路的顺畅运行至关重要。
2. 2.The construction of these highway service facilities hasgreatly improved the transportation efficiency.
   这些高速公路服务设施的建设大大提高了交通效率。
3. 3. The new highwayservice facilities have attracted many tourists to visitthe scenic area.
   新的高速公路服务设施吸引了许多游客前来参观这个风景区。