- the imaginary circle round the earth, parallel to the equator, at latitude 66° 32′ N; it marks the northernmost point at which the sun appears above the level of the horizon on the winter solstice
| 单词 | arctic circle |
| 释义 | WordReference Random House Unabridged Dictionary of American English © 2024 Arc′tic Cir′cle,
Collins Concise English Dictionary © HarperCollins Publishers:: Arctic Circle n
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