Physicists studying the issue talk not about time machines but about closed timelike curves (CTCs).
讨论这类想法
物理学家，谈
时光机器，而类时迴圈（closedtimelikecurve,CTC）。
Physicists studying the issue talk not about time machines but about closed timelike curves (CTCs).
讨论这类想法物理学家，谈时光机器，而类时迴圈（closedtimelikecurve,CTC）。
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