Every footstep counts, 每一步都至关重要

264. The bison have reached their goal,
     美洲野牛达到了目的
265. a mouthful of withered grass.
     一大口枯草
266. And where the bison have dug, the fox now spots an opportunity.
     在美洲野牛挖过的地方狐狸也见缝插针
267. Every footstep counts,
     每一步都至关重要
268. but he mustn't break through...
     但是时机...
269. Yet.
     还未到
270. He listens carefully to pinpoint his target.
     他仔细监听着猎物的一举一动

来自《行星地球 第二季 第五集 Planet Earth S02E05 草原》第 267 行