For example, a historical transaction might need to be retained due to being used as evidence in a dispute or investigation.

例如，为了为争议或调查提供证据，可能需要保留某个历史事务。

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So, the environmental right to know was studied systematically by using a combination method of historical investigation, comparative analysis, combining theory with practice and dialectical analysis.

因此，综合采用历史考察、比较分析、理论结合实际与辩证分析的方法对环境知情权进行系统研究。

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It led to a UK-wide police investigation into historical abuse and set off a chain of events that resulted in the departure of the BBC's then director general, George Entwistle.

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The peer was falsely accused after a BBC Newsnight investigation into allegations of historical child abuse.

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The desire for a new understanding of historical trauma accompanies this new investigation of damaged minds and bodies.

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