I often look back upon the happy old days.

我经常回忆以前的快乐时光。

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The old often look back on the good old days.

老人常回忆以前的美好日子。

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They often look back on the days they spent together.

他们常回顾他们在一起度过的日子。

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My husband and I often look back in wonder at how we actually made it through some of those tough early years.

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Amidst the hyper-activity of trying to mesh two companies together, CEOs often look back a year or two later and realize they had little or no oversight over the integration.

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Look for their S-1 filing, which will often have their financial statements going back to when that company started.

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