The travellers are hampered by dangerous dust storms. 肆虐的沙尘暴困住了这群迁徙的动物

241. a vast inland delta.
     一片巨大的内陆三角洲
242. At the moment it is dry,
     这时它仍处于旱季
243. but water is coming.
     可是水马上就要来了
244. The travellers are hampered by dangerous dust storms.
     肆虐的沙尘暴困住了这群迁徙的动物
245. Females and calves can easily get separated from the main herd.
     母象和小像一不小心就会和大部队分开
246. For this pair sanctuary lies in the patch of woodland a few miles ahead.
     对于这对母子而言 避难所就在前方几英里处的林地内
247. They can't rest until they reach it.
     它们不能休息 必须尽快到达那里

来自《行星地球 第一季 第一集 Planet Earth S01E01 从北极到南极》第 244 行