Professor Jacobs is an expert in Ufology and has been studying UFO's for over 20 years.

雅克布斯教授是飞碟学方面的专家,他研究不明飞行物已有20多年.

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In Ufology, a close encounter is when a person witnesses an unidentified flying object.

在不明飞行物学中, 当一个人目击了不明飞行物被称为近距离接触.

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In Ufology , any extraterrestrial contact initiated by humans is known Close Encounter of the Fifth Kind.

在不明飞行物学中,人类与外星任何形式的接触都被称为第五类接触.

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