It might seem there wouldn't be enough food 这么小的岛屿似乎不可能
They will only use just enough energy to make their kill 它们只用恰到好处的力量来猎杀
Days may pass before prey swims close enough for it to strike. 它可以在这里挂好几天. 直到猎物近到让它可以发动攻击
Adults can only raise young here in years when the seasonal vole crop is big enough to support them. 成鸟能在这里养育小宝宝 表示今年的田鼠够多可以养活它们
but in Southern Africa they're so big they create seas rich enough to support colonies of over a million seals. 不过在南部非洲的大洋流带来的 充足食物能满足百万只海豹的需要
She must leave now, while she still has enough energy to guide and protect her calf, on the long voyage ahead. 她现在必须离开 趁她还有足够的能量 在漫漫征途之中来指导和保护她的幼子
Neither seem likely to produce enough nourishment to support bird life on this scale. 而且看上去也不能提供给鸬鹚足够的食物
until her calf is strong enough to make the journey to the feeding grounds, near the poles. 等到小鲸足够强壮了,才开始到极地进食点的旅行
and some just can't seem to get enough of them. 这只看上去好像嘴里塞的还不够满
but finding enough food to survive is so challenging that most animals living here tend to be small 但由于寻找食物是个巨大的挑战 因此很多雨林生物都长得很小巧