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时空穿梭从理论上看似乎有些荒诞,但导致科幻作家如此“疯狂”的正是爱因斯坦的相对论,它给他们提供了理论上的支持。爱因斯坦在
Space-time shuttle seems theoretically absurd, but it is Einstein’s theory of relativity, which leads science-fiction writers to do so. It provides them with theoretical support. Einstein at