and encourages the herd to make one last effort. 它鼓励象群再做最后的努力

321. The elephants are nearing the end of their long journey.
     象群正接近漫长旅途的终点
322. After weeks of marching they're desperately tired.
     经过数周的长途跋涉 它们都已是精疲力尽
323. The matriarch can smell water
     母象首领闻到了水的气味
324. and encourages the herd to make one last effort.
     它鼓励象群再做最后的努力
325. The youngsters are exhausted
     小象疲惫不堪
326. but their mothers have made this journey before
     不过它们的母亲以前也经历过这种旅行
327. and they know that they're close to water.
     它们很清楚水就在不远的前方

来自《行星地球 第一季 第一集 Planet Earth S01E01 从北极到南极》第 324 行