ramp with slipresistant surface

例句：

1. 1. The car was parked on a steep ramp.
   汽车停在一个陡峭的坡道上。
2. 2. The hikers were forced to climb the steep ramp.
   登山者被迫爬上陡峭的坡道。
3. 3. The ramp leads to the main road.
   这个坡道通向主路。