Arctic Circle マイ単語帳に追加

北極圏

a line of latitude near but to the 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.

北極に近いが南の緯度の線。それは、太陽が北の冬至点に見える最北端と、白夜が北の夏至点に見られる最南端を示している。