calendar-based system 期限为基础的
Each person will remember their own personal perspective of the truth based on their place in the calendar system.
每个人都会记住他们自己个人的真理透视图，是以他们在历法体系里所处的位置为基础。
Equating an end-date for the Mayan calendar round with a date in the European-based Gregorian system has been a heartbreaker for astronomers.
为了使玛雅历法的一个完结日与围绕着的以欧洲为基础的格里高利体系等同，已经让天文学家们伤透了脑筋。
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