The wet, marshy land produces a large number of insects that provide food for the smaller birds that, in turn, provide food for the arctic fox and the wolf. 这湿润的沼泽地能生出大量的昆虫,这就给小鸟提供了食物。接下来这些小鸟又充作了北极狐和北极狼的食物。
A decrease in the number of these smaller animals would in turn decrease the food supply for the arctic fox and the wolf. 倘若这些波动的数量减少了,接下来就会减少了供应给北极狐和北极狼的食物。
I was talking with my Inuit host, his wife piled Arctic wolf and caribou skins on the ice bed. 当我跟我的因纽特主人交谈时,他的妻子把北极狼皮和北美驯鹿皮堆在冰床上。
The freezer may look bare but an arctic wolf knows a tasty fish might be within reach in the shallows off Canada's Ellesmere Island. 在加拿大的艾利斯摩尔岛,一只北极狼知道在这种天气下美味的鱼总躲在冰层之下。