Sensors and circuits were on the brink of failing and NASA experts realised that they had to do something or lose contact with their probe forever.

传感器和电路濒临故障，NASA 的专家们意识到他们必须做点什么，否则将永远与探测器失去联系。

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When they say something silly or do something ridiculous, there is always the Internet to spread the news in minutes and keep their "story" alive forever.

一旦他们说了一些愚蠢的话、或做了一些荒诞的事，网络总是能在瞬息间把这件事传遍，他们的“黑历史”也就永远无法抹去了。

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And I realized, in the dream, that I would do that forever."

VOA: special.2009.06.28

I think it's very difficult, indeed I think it's impossible, to think of anything you'd want to do forever.

我认为很难，其实我认为不可能，想出一件你希望永远做下去的事。

耶鲁公开课 - 死亡课程节选

He will have to do battle with this temptation forever: the temptation offered by classical literature.

他将不得不永远与这种：,来自古典文学的诱惑战斗。

耶鲁公开课 - 弥尔顿课程节选

He is chatty and likeable and constantly on the look out for the opportunity for a gag - but he is forever popping off to do something.

BBC: Am I Sacha Baron Cohen's next target?

"We probably can't do it forever, " says Chief Executive Bastian Lehmann.

WSJ: Practical Perks: Workers Get Credits at Task Outsourcers

But I think, I think it's, it may have been right in the past but I don't think it makes very much sense these days to do it forever.

BBC: Breakfast with Frost