一头用两条后腿直立行走的新泽西州的黑熊已经成为社交媒体的宠儿，距离上次被目击的几个月后，它再次出现并被拍了视频。
A New Jersey black bear that walks upright on its two back legs and has become a social media darling has re-emerged and has been captured on video months after its last sighting.
许多年来对于目击的不可靠性（还有记忆的不可靠性）在学术界已经达成共识；
The problem of eyewitness unreliability (and memory unreliability) has been known in academia for years;
在全世界各地不同时期都有ufo目击的报告，引起人们关于外星生命以及地外生命是否访问过地球的争论。
UFO sightings have been reported throughout recorded history and in various parts of the world, raising questions about life on other planets and whether extraterrestrials have visited Earth.
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