Arctic Circle

英 [ˌɑːktɪk ˈsɜːkl]

美 [ˌɑːrktɪk ˈsɜːrkl]

n.  北极圈

牛津词典

noun

• 北极圈
  the line of latitude 66˚ 33′ North

柯林斯词典

• 北极圈
  The Arctic Circleis an imaginary line drawn around the northern part of the world at approximately 66° North.

双语例句