Physicists studying the issue talk not about time machines but about closed timelike curves (CTCs).
讨论这类想法
学家，谈不是时光机器，而是类时迴圈（closedtimelikecurve,CTC）。
Physicists studying the issue talk not about time machines but about closed timelike curves (CTCs).
讨论这类想法学家，谈不是时光机器，而是类时迴圈（closedtimelikecurve,CTC）。
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