这位著名的物理学家最近提出，我们应该提防与外星人接触，他引用了当年欧洲人在美洲海岸登陆使原始印第安人发生些什么。
The famous physicist recently suggested that we should be wary of contact with extraterrestrials, citing what happened to Native Americans when Europeans landed on their shores.
另一个答案是外星人已经造访过地球，发现我们的星球太原始太枯燥，根本不值得在星际旅游的导游册中浪费笔墨。
Another is that aliens visited Earth and found our planet so dull that we didn't even merit a rating on their interstellar travel guide.
这位著名的物理学家最近提出，我们应该提防与外星人接触，他引用了当年欧洲人在美洲海岸登陆使原始印第安人发生些什么。
The famous physicist recently suggested that we should be wary of contact with extraterrestrials, citing what happened to Native Americans when
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