jumping-off point color起点颜色
Jumping-off point coordinate起点坐标
jumping-off jumping-off point起点
Jumping-off point of waterway航道终点
N-SING（单数型名词） A jumping-off point or a jumping-off place is a place, situation, or occasion that you use as the starting point for something. 起点; 开端
The base will serve as a jumping-off point for troops going out into the country areas.
基地将作为军队进入乡村地区的出发地。