The city has long since passed into oblivion .

许多古代的城市早已淹没。

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Many ancient cities have long since passed into oblivion.

许多古代的城市早已湮没。

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I had known that tune in my infancy, but it had long since passed out of my mind.

我曾在我年幼的时候记得歌的调子，但已经有很久记不起来了。

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The days when companies used public markets as important sources of financing have long since passed.

CNN: Facebook needs to earn your trust

PLO, a body that once made history but has long since passed its best-before date.

ECONOMIST: After Hussein

Colorado MicroDisplay, Brillian, Three-Five Systems and others that have long since passed were toiling on such designs as far back as 10 years ago.

FORBES: Move up http://i.forbesimg.com t Move down