先验性地试验出错以利纠正和完善to proceed by trial and error

• 美国股市的法律和制度是通过多年来不断试错和纠错来完善的。

  The laws and systems of the US stock market have been perfected over many years, in a process of constant trial and error and rectification of mistakes.

• 通过各种“试错”，欧盟的领导们已经渐渐达成了共识。

  Through various processes of trial and error, EU leaders have gradually reached a consensus.