Arctic Circle

名词 arctic circle:

1. a line of latitude near but south of the north pole; it marks the northernmost point at which the sun is visible on the northern winter solstice and the southernmost point at which the midnight sun can be seen on the northern summer solstice

1. I said: "Only the other day the Russians put out that they have discovered huge new diamond fields somewhere inside the Arctic Circle."
   (我说：“仅在前两天俄国人发表消息说，他们在北极圈内某个地方发现了数个巨大的钻石矿区。”)