如果宇宙只有我们人类，那岂不是太浪费空间了。
If it's just us, it seems like an awful waste of space。
——《超时空接触》
如果宇宙只有我们人类，那岂不是太浪费空间了。
If it's just us, it seems like an awful waste of space。
——《超时空接触》
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