as it has done for millions of years. 几百万年来一直如此

171. The calf is safe once more...
     幼崽又安全了
172. ...but the cheetah will be back...
     但猎豹还会回来
173. and the war between the grassland mammals will continue
     草原哺乳动物之间的战争将会继续
174. as it has done for millions of years.
     几百万年来一直如此
175. In prehistoric South America,
     在史前的南美洲
176. the grasslands played host to the same battle...
     草原上发生了同样的战斗
177. but with very different animals.
     但参与者则是完全不同的动物

来自《我们星球上的生命 第一季 第七集 Life on Our Planet S01E07 地球继承者》第 174 行