A species once extinct is gone forever.

一个物种一旦灭绝就永远消失了。

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The old social order was gone forever.

旧的社会秩序一去不复返了。

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It seemed as if she'd been gone forever.

好像她已经永远地离开了一样。

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And they say that it is likely that two species are probably gone forever.

VOA: special.2009.12.16

It eradicates identity, eradicates sense of self. It's gone forever, and you can see the change in pronouns.

它超越了身份，超越了自我意识，它永远持续，我们能从代词中找到变化。

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And a moment later, it is gone forever.

VOA: special.2009.05.17

So unless we can hitch a ride on some souped-up neutrinos, 2011 is gone forever.

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In contrast, a hotel room must be rented tonight, or it is gone forever.

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It was really only at the moment that I understood that he was gone forever.

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