配個圖：本初子午線(Prime meridian)，又稱為格林威治子午線，是地球經度的起點(即為0°)

來源: 嚴惠姍於 2025-05-01 23:03:29 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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