A small ramp built into the curb of a sidewalk to ease passage to the street. especially for bicyclists. pedestrians with baby carriages. and physically disabled people.是什么意思_A small ramp built into the curb of a sidewalk to ease passage to the street. especially for bicyclists. pedestrians with baby carriages. and physically disabled people.在线翻译_英语_读音_用法_例句