说中文表达之前，先来了解一下similar fact evidence的英文含义：

In the law of evidence, similar fact evidence (or the similar fact principle) establishes the conditions under which factual evidence of past misconduct of the accused can be admitted at trial for the purpose of inferring that the accused committed the misconduct at issue.

大概意思是说，在证据法中，similar fact evidence（或similar fact principle）规定了在审判中可以接受被告人过去不当行为的事实证据的条件，以推断被告人实施了相关不当行为。通俗一点就是，过去犯过类似的错误，可以作为这次犯错的依据。

通过查询发现，中文表达中有“类似事实证据”或“类似事实原则”之说，具体可参考如下相关例句：

The discretion was applied inter alia to exclude “similar fact” evidence or other pieces of evidence which tended to reveal the defendant’s bad character, or other prejudicial matter.

酌情权亦包括排拒，类似实情证据，或其他倾向于揭示被告人品格不良的证据，或其他引起偏见的事项。

Canada further noted that “similar fact evidence” (i.e. evidence of previous wrongful acts) was admissible when the prosecution satisfied the trial judge that the probative value of the evidence in relation to a particular issue outweighed its potential prejudicial effect on the accused.

加拿大进一步指出，如果检控让审判法官认为有关某一具体问题的证据之证明价值超过了其对被告可能存在的不利影响，则可以受理“类似事实证据”（即先前 不法行为的证据）。

Even if persons were willing to reveal other cases and provide information, the Commission, in consideration of the time specified to complete the inquiry, might refuse to admit such evidence which fell outside its scope of work, notwithstanding the principle of similar fact evidence in criminal trials.

即使有关人士愿意披露其他个案及提供资料，调查委员会考虑到完成调查的指定时限，可能会拒绝接纳此等超越其工作范围的证据，尽管刑事审讯有类似事实证据的原则。