national meridian 中文意思是什麼
national meridian
解釋
國定子午線-
Just down the road is the national observatory at greenwich, which houses the meridian line and forms the standard from which the world ' s time zones are set
順道而下便是穿過格林尼治子午線的格林威治國家天文臺,且世界的零度經線以此而劃分。
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