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
They thrive here on the pine cones and although these are also seasonal they can be stored and eaten throughout the year. 松鼠以松果为食, 虽然松果是季节性生长的,但可以贮藏起来吃一整年
and even if rains fail the needles can extract moisture from the fogs that roll in from the sea. 即使不下雨, 针叶也可以从海上蜂拥而来的水雾中汲取水分
Neither can afford a lapse in concentration. 必须全神贯注,不能失败
It's wise to eat all you can, when you can 能吃多少就吃多少
The capercaillie can also digest conifer needles 北欧雷鸟也吃针叶林的针叶
It's so big and powerful, it can even bring down an adult caribou. 它大而强壮,甚至可以干掉一头成年北美驯鹿
For it's size, it's said that the animal can eat more in one sitting than any other 据说它每一餐的食量是同体型动物的一倍半
so that it's tongue can extract the seeds. 然后用舌头来卷取种子
Birds are fortunate. When the seasonal crop is gathered, they can fly south 鸟类是幸福的.当收获季节结束时,它们可以向南方飞去