The sort of animal lived in the Arctic Circle.这种动物生活在北极圈里.The Arctic Circle is the boundary of this region of darkness.北极圈就是这一黑暗地带的边界.Breed of hunting and sled dog found near the Arctic Circle.产于北极圈附近的猎犬和雪橇犬....

n.北极圈...

the Arctic Circle的音标：...