ramp  
 noun [ C ] uk/ræmp/ us/ræmp/
  (SLOPE)        
  (人造)斜坡,坡道
an artificial slope
  I pushed the wheelchair up the ramp and into the supermarket. 我沿坡道把轮椅推进了超市。 
  UK(路面上使车辆放慢速度的)凸起减速带 
a raised strip built into a road to make vehicles drive more slowly
   (ROAD)     
 US (UK slip road)支路 
a short road on which vehicles join or leave a main road