Providing beneficial, neutral and harmful outcomes, the report is designed to prepare mankind for the possibility of an alien encounter on Earth.
报告主要目的是为与外星人在未来可能性的“交锋”提出假想，和对策。
The authors explore other scenarios as well, including other destructive outcomes of encountering an alien race. Positive and neutral outcomes are included.
这些作者也研究了其他可能，既包括遭遇外星异种而带来的其他种种毁灭性后果，也包括那些积极的和中性的后果。
In their report, Would Contact with Extraterrestrials Benefit or Harm Humanity? A Scenario Analysis, the researchers divide alien contacts into three broad categories: beneficial, neutral or harmful.
在他们的报告里，与外星人接触是利还是弊呢？一份推测分析报告，研究员们将与外星人的接触分为三大类别：有利的，中立的，有害的。
In their report, Would Contact with Extraterrestrials Benefit or Harm Humanity? A Scenario Analysis, the researchers divide alien contacts into three broad categories: beneficial, neutral or harmful.
在他们的报告里，与外星人接触是利还是弊呢？一份推测分析报告，研究员们将与外星人的接触分为三大类别：有利的，中立的，有害的。
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