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人们发现科学幻想中有许多想法,最后都变成了严肃的物理理论.然而要设计、制造一部能改变时间的机器这种想法,还没跨过科学与幻想的界线而变成
Many people find that there are many ideas in science fantasy that eventually turn into serious physics.However, the idea of designing and making a machine that can change the time has not yet gone beyond the boundary between science and fantasy