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問題的實質是【太陽日】和【恒星日】的差別.地球自轉產生了晝夜的交替.人們日出而作,日落而息.太陽的昇與落成為了我們日常所用的時間標準,例如,把一天當中太陽最高的時刻稱之為12點.全天共24個小時,稱之為“太陽日”…
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