for back at the den... 因为在巢穴里

242. Using her long, sticky tongue,
     用长长的粘性舌头
243. she scoops them up with relish.
     愉快地将白蚁挖起
244. And the more, the merrier...
     越多越好
245. for back at the den...
     因为在巢穴里
246. a handful of pups await her return.
     许多幼崽在等待它的归来
247. Crucial to the success of mammals
     哺乳动物成功的关键是
248. was the evolution of parental care.
     父母照护的进化

来自《我们星球上的生命 第一季 第五集 Life on Our Planet S01E05 巨兽阴影下》第 245 行