This annual feast helps her to fatten, 一年一度的鲑鱼盛宴帮助它增肥

188. But now she is old,
     但如今雌熊已经老了
189. and this year she's finding it hard.
     捕鱼一年比一年困难
190. Her fishing skills, however, haven't totally deserted her.
     然而 它精湛的捕鱼技巧还没有彻底丧失
191. This annual feast helps her to fatten,
     一年一度的鲑鱼盛宴帮助它增肥
192. ready for the winter ahead.
     为即将到来的寒冬做准备
193. But it also helps the patch of forest where she lives.
     同时也有益于这片森林
194. This female has an unusual relationship with the forest.
     白灵熊与森林有着非比寻常的关系

来自《行星地球 第三季 第五集 Planet Earth S03E05 森林》第 191 行