ascend

verb [vi. 不及物动词]攀登，登上；上升，升高，通往高处；升职，晋升；追溯，溯源

If a staircase or path ascends, it leads up to a higher position. (
楼梯或路) 向上延伸 A number of staircases ascend from the cobbled streets onto the ramparts. 若干个阶梯从鹅卵石街道向上延伸到城墙上。