Not long ago, just being in IRC was enough to forge bonds between chatters.

不久前，只需参加因特网中继聊天就足以在聊天者之间建立联系。

《柯林斯英汉双解大词典》

Plato long ago pointed out that it is not enough just to believe what is true.

很久以前，柏拉图就指出，仅仅相信真理是不够的。

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There was a time, long ago, when people starved because there was not enough food.

很久很久以前，人们因没有足够的食品而挨饿。

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Rogers and Canadian bank CIBC struck a deal for NFC-based mobile payments back in May, long enough ago that it was starting to fade out of the public consciousness.

ENGADGET: Rogers, CIBC may launch Suretap NFC-based payments on October 15th, require a unique SIM

That was 70 years ago, more than long enough for his stature as a writer to have been posthumously recognized.

WSJ: Otis Ferguson: A Film and Jazz Critic Still Waiting for His Due | Sightings By Terry Teachout

Thousands of years ago humans didn't live long enough to die of clogged arteries.

FORBES: Rethinking Biology