As you might have guessed, the clouds did mean rain.
你可能已经猜到了，这些云确实意味着要下雨。
Cocconi and Morrison guessed that the aliens would choose a frequency that would mean something to creatures who know math and chemistry.
Cocconi和Morrison猜测外星人会选择对于拥有数学和化学知识的生物有意义的频率。
Cocconi and Morrison guessed that the aliens would choose a frequency that would mean something to creatures who know math and chemistry.
Cocconi和Morrison猜测外星人会选择对于拥有数学和化学知识的生物有意义的频率。
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