Will it be the long sought signal from an alien civilization?
会不会是我们探寻已久的外星文明信号呢？
What if we encounter an alien civilization whose intentions are completely baffling?
问题是，如果完全无法判明我们所遭遇的外星文明的来访意图，该怎么办？
The archeologist said that the pyramids are the remnants of an alien civilization .
里边的考古学家说这些金字塔是一种地域外文明的遗迹。
The archeologist said that the pyramids are the remnants of an alien civilization .
里边的考古学家说这些金字塔是一种地域外文明的遗迹。
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