Саг хугасаа: хубилбаринуудай хоорондохи илгаа

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'''Саг хугасаа''' үнгэрһэн, модоо, ерээдүй<ref>"Newton did for time what the Greek geometers did for space, idealized it into an exactly measurable dimension." ''About Time: Einstein's Unfinished Revolution'', Paul Davies, p. 31, Simon & Schuster, 1996, ISBN 978-0684818221

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