As drought intensifies, 随着干旱加剧

146. They're setting off on the longest overland migration
     斑马的迁移距离称霸
147. made by any mammal in Africa,
     所有非洲哺乳动物
148. marching towards the scent of distant rains.
     嗅着远方雨水的味道不断前进
149. As drought intensifies,
     随着干旱加剧
150. desert-living elephants must also undertake long journeys
     沙漠象也必须踏上旅途
151. in search of water.
     寻找水源
152. The older females can remember where,
     年长的母象能记住哪些地方

来自《行星地球 第二季 第四集 Planet Earth S02E04 沙漠》第 149 行