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4.
Dr wittlinger , therefore , decided to investigate a century - old hypothesis that desert ants have internal pedometers ? in other words , they count their steps out , and they count them back 所以，威特林格博士决定验证一下一个世纪猜想? ?沙漠蚂蚁体内含有步数计（里程表） ，换言之，它们在出行时算好步数，然后再一步步数着返回。
5.
As predicted , the ants on stilts , whose stride - length meant their internal pedometers had not clicked enough times , walked blithely past their nests , and were left stranded almost five metres on the far side before they started looking for the hole 不出所料，踩高跷的蚂蚁由于其步长造成体内步数计无法运作足够次数，因此竟似闲庭信步一般走过了蚁巢，结果在离蚁巢近5米远的地方愣住了，然后才开始继续寻找洞穴。
