There is no physical evidence or accurate description on record.

没有物证或者记录下来的准确描述来证明这些理论。

youdao

This is a particularly useful method of fact-finding where no physical evidence of an action may have taken place.

在没有其他的实地证据可以证明该事件可能发生的情况下，实地观察法是一个非常好的方法。

youdao

The Crown Prosecution Service said there was insufficient evidence to proceed because I had been drinking and there was no physical evidence.

皇家检察署认为起诉证据不足，原因是我醉酒，而且身上没有明显伤害。

youdao

But when I review the evidence, I come away thinking there's no good reason to move beyond the physical.

但当我考察这个证据时,我认为,没有比物理证据更好的理由

耶鲁公开课 - 死亡课程节选

As with the San Antonio case, there was no physical evidence to corroborate either of these prior accusations.

FORBES: The San Antonio Four Show the Injustice of Sex Abuse Witch-hunts

No physical evidence of the plot has yet come to light and the government has held him in extreme secrecy.

ECONOMIST: Terror suspects freed from legal limbo | The

Defense lawyers contend that aside from the online chatter, there is no physical evidence Valle had any intention of acting on his fantasy.

CNN: STORY HIGHLIGHTS