Surely if an alien civilization is advanced enough to master space travel, it can devise more effective ways of communicating with us.
自然地，如果有外星人文明已先进到可以掌控太空旅行，它可以通过更有效的途径与我们交流。
Surely if an alien civilization is advanced enough to master space travel, it can devise more effective ways of communicating with us.
自然地，如果有外星人文明已先进到可以掌控太空旅行，它可以通过更有效的途径与我们交流。
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