Physicists studying the issue talk not about time machines but about closed timelike curves (CTCs).
讨这想法的物理学，谈的不时光机器，时迴圈（closedtimelikecurve,CTC）。
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Maybe closed timelike curves aren't closed at all?
也许闭合类时间曲线根闭合？
In a closed timelike curve, when you travel to the past, you've always been a part of that past.
在个封闭时间曲线中，当你回到过去，你就直过去分。
Without getting into too much detail, a time machine like a Tipler cylinder could create a closed timelike curve.
简单来说，像提普勒柱体这样时间机器可以创造出个封闭时间曲线。
We don't understand quantum physics enough to know if these closed timelike curves could or couldn't exist.
我们对量子物理学了解还够，知道这些封闭时间曲线否存在。
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划词翻译
详细解释
这
想法的物理学
，谈的不
时光机器，
时迴圈（closedtimelikecurve,CTC）。
类时间曲线根
个封闭
曲线中，当你回到过去，你就
分。
