They claimed that they had been in contact with extraterrestrial beings.

他们声称在同外星人保持联络。

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Popular culture has attributed these disappearances to the paranormal or activity by extraterrestrial beings.

人们普遍将这些神秘的失踪事件归因于超自然力量或外星人的活动。

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One of the few includes the Zoo hypothesis. This is based on the assumption that the extraterrestrial beings simply choose not to interact with us humans.

其中之一包括了动物园假说，根据是外星生命干脆选择不和人类相互接触。

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The fact that these probes will all be leaving the solar system led to NASA planning on some way to tell extraterrestrial beings something about human beings should they discover any of the probes.

FORBES: Voyager 1 Flies Through 'Magnetic Highway' On Its Way Out Of The Solar System

Shall the voters for the City and County of Denver adopt an Initiated Ordinance to require the creation of an extraterrestrial affairs commission to help ensure the health, safety, and cultural awareness of Denver residents and visitors in relation to potential encounters or interactions with extraterrestrial intelligent beings or their vehicles, and fund such commission from grants, gifts and donations?

FORBES: Denver Citizens to Vote on Extraterrestrial Affairs Commission