诸如第二人生之类的虚拟世界可能不仅仅只是模型，但几乎毫无疑问的是，如果Twomey说对了，他们将足以引领航向。
Virtual worlds such as Second Life may not be the exact model used in the future, but there is little doubt that if Twomey is correct they are certainly heading in the right direction.
他们的话可能对了一半：问题不在于时间穿梭车是怎样工作的，而是时间穿梭的一些形式没有必要不合情理。
They would be half right: That is not how time travel might work, but time travel in some other form is not necessarily off the table.
他们的话可能对了一半：问题不在于时间穿梭车是怎样工作的，而是时间穿梭的一些形式没有必要不合情理。
They would be half right: That is not how time travel might work, but time travel in some other form is not necessarily off the table.
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