Unless a friendly alien from an advanced culture helps him out.
除非有友好的外星人能助我们一臂之力。
Luckily, the coded message came from a friendly alien race that fathered and protected us over the years.
幸运的是，该编码的消息从一个友好的外星种族的父亲和保护我们多年来来了。
Earlier this year, Hawking warned that humans should be wary about trying to make contact with other alien lifeforms in space as we could not be sure that they would be friendly.
今年早些时候霍金警告说，人类应该尽力避免与太空其他生命形式接触，因为我们无法肯定他们是友好的物种。
Earlier this year, Professor Hawking warned humans should be wary about trying to make contact with other alien life forms as we could not be sure that they would be friendly.
今年早些时候霍金警告说，人类应该尽力避免与太空其他生命形式接触，因为我们无法肯定他们是友好的物种。
To assume alien civilizations will be friendly and welcome us with open arms seems grossly naïve.
如果认为外星智慧生命会非常友好的敞开胸怀欢迎我们，那真是天真的想法。
People living on the alien planet, the Navis, are very kind and friendly, and they love peace and nature.
这个外星球上生活的人们——纳威人善良而友好，他们热爱和平和自然。
People living on the alien planet, the Navis, are very kind and friendly, and they love peace and nature.
这个外星球上生活的人们——纳威人善良而友好，他们热爱和平和自然。
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