“查明真相”常见的英文表达有 find out the truth 或 uncover the truth。
find out the truth：强调通过调查、探索等手段去发现事情的真实情况。例如：The police are trying to find out the truth about the accident.（警方正在努力查明这起事故的真相。）
uncover the truth：侧重于揭开、揭露原本隐藏或未知的真相。例如：Journalists risk their lives to uncover the truth.（记者们冒着生命危险去揭露真相。）