Scientists say that this belief is not based on fact.

科学家们说，这种看法不是以事实为依据。

youdao

This research is based on anecdote not fact.

这项研究的根据是传闻而非事实。

《牛津词典》

You would be making an assumption that's not based on any fact that you could report.

你会做出不以你能报道的任何事实为依据的一种假设。

《柯林斯英汉双解大词典》

"A decision that I consider to be not only be unwise, but in fact based on a refusal to face the fact that what we are involved with here is a war with people who follow a religiously-based ideology that calls on them to kill us,and to return instead to the mindset that prevailed before September 11,2001,".

VOA: standard.2009.11.25

But they're not accurate all the time in predicting bonding within molecules, and the reason for this is because Lewis structures are not, in fact, based on quantum mechanics.

但它们在预测分子内,成键时不总是正确的，这是因为Lewis结构，实际上不是基于量子力学的。

麻省理工公开课 - 化学原理课程节选

Everyone has their own taste in music, but to decide if someone is any good or not based on the fact that you first saw them on a reality TV show rather than in a smoky back street club somewhere is just silly and shows a lack of real critical analysis.

BBC: David Sneddon: Your views

Liberal Democrat home affairs spokesman Mark Oaten said the policy should be based on "fact not tabloid fiction".

BBC: NEWS | UK | Politics | Migrant measures prompt debate

"That tone scarred that last election as it has scarred every election since devolution started, " he said, firing off a salvo at Labour while calling for contributions - however passionate - to be based on fact and not smears and misinformation.

BBC: What is the cost of conversation?