Whales and dolphins have been found with hind limbs; this rare occurrence is due to the reemergence of a trait they inherited from their terrestrial ancestors.

发现鲸和海豚身上有后肢；这种稀有的现象是由于它们在陆地上的祖先身上的特征再次被遗传。

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When plants pioneered the land, they faced a range of challenges posed by terrestrial environments.

当植物开辟土地时，它们面临着陆地环境带来的一系列挑战。

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But that makes it easier to identify something as a meteorite, as opposed to just a terrestrial rock.

但是，这使得我们更容易将东西识别为陨石，而不仅是地面的岩石。

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After a half-century,the search for extra-terrestrial intelligence, or SETI, has pretty much come up empty.

VOA: standard.2010.04.16

Falcone explained he was buying up spectrum anywhere he could and was building a 4G terrestrial network with a satellite overlay.

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SKA, however, would be able to detect the leakage into space from a standard terrestrial television transmitter at a range of half a dozen light years or so.

ECONOMIST: Radio telescopes

It would have just contained a bunch of smaller rocky terrestrial bodies, maybe a couple of Neptune mass things.

NPR: What Makes Our Solar System Special?