Compared to Ambler, they are cheaper to launch into space by a factor of 1000; thus, sending hundreds of mobots is a fraction of the cost of one large robot.

• 和“漫步者”相比，他们被发射到太空的费用要便宜1000倍；这样一来，即便发射数百个小机器人，其成本也只是一个大机器人的零头。