过去有一个这通常被称为SETI的项目，即对外星智能的探索项目。
There used to be a project called SETI, the search for extra-terrestrial intelligence.
对外星智能的探索研究院，专门寻找外星生物。它他们对接受到信号的变调和被瀑布声掩盖的笛声做了比较。
The SETI institute, which searches for extra terrestrial life, has compared picking up a signal’s modulation to picking up the sound of a flute when it’s masked by the noise of a waterfall.
对外星智能的探索研究院，专门寻找外星生物。它他们对接受到信号的变调和被瀑布声掩盖的笛声做了比较。
The SETI institute, which searches for extra terrestrial life, has compared picking up a signal’s modulation to picking up the sound of a flute when it’s masked by the noise of a waterfall.
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