In at least one area, liquidity management, many investors learned painful lessons from the crisis.

至少在一个地区，有关流动性管理，许多投资者从危机中吸取了惨痛的教训。

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Al Gore (D-TN), the Senate signalled that it, at least, had learned one of the most important lessons of the Gulf War: It is better to be defended, even imperfectly, against ballistic missile attack than to be defenseless against it.

CENTERFORSECURITYPOLICY: Center For Security Policy

"I really don't believe that Italian football has learned the lessons of Heysel and Hillsborough, or at least hasn't implemented any tangible changes at anything like the pace required, " said another Italian football writer Adam Digby.

CNN: February 21, 2013 -- Updated 1601 GMT (0001 HKT)

I'd like to take some of the lessons that I learned this week on, so I hope to aim to take public transport to work at least three days per week and possibly more if my employers can come up with some alternative to using my own car for site visits and meetings.

BBC: NEWS | UK | Scotland | Scotland's public transport on trial