Grouse from all over the desert visit this oasis, 沙鸡从四面八方飞来这片绿洲

170. Their only hope is their father.
     唯一的希望寄托在父亲身上
171. Every morning he makes the 120-mile round trip
     每天早上 他都要往返飞行一百九十三公里
172. to get water for the family.
     为家人带水回来
173. Grouse from all over the desert visit this oasis,
     沙鸡从四面八方飞来这片绿洲
174. arriving together in large flocks,
     在这里集结成群
175. and that is important.
     这十分重要
176. There's safety in numbers.
     数量越多越安全

来自《行星地球 第二季 第四集 Planet Earth S02E04 沙漠》第 173 行