These creatures were believed to come from outer space.

这种生物被认为是来自外太空的。

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These creatures were believed to have come from outer space.

据信这种生物来自外太空。

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These tiny creatures appear to eat plastic, may have come from outer space and have been linked with cancer.

这些微小的生物看上去以塑料为食，可能来自外太空，与癌症有关。

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In an amusing Super Bowl ad that debuts on TV on Sunday, the Kia brand explains where babies come from (outer space).

FORBES: Kia Super Bowl Ads For Sorento, Forte Models Use Space Babies and Hot Bots

How fitting, then, that evidence unearthed not far from Roswell suggests that life could indeed have come to earth from outer space.

ECONOMIST: Old salts