They made accusations which could not be substantiated.

他们提出的指控不成立。

youdao

This article is vague and general in content and must be substantiated.

这篇文章内容空泛，必须加以充实。

youdao

That statement has since been removed because it was false and could not be substantiated.

这个陈述已经被移除，因为它是错误的而且是无法被证实的。

youdao

This view appears to be substantiated by government reports claiming many released inmates go on to join terrorist groups.

CNN: Terror threat from Gitmo prisoners is exaggerated

Contractual losses cannot be demonstrated by conjecture, indeterminate estimates or mere assumptions, but must be substantiated by concrete facts.

FORBES: Oakley v. Rory McIlroy and Nike: Enforcing Rights Of First Refusal In Endorsement Agreements

Avoiding additional financial losses is a far greater incentive to lenders than the promulgation of new rules governing how loans should be substantiated.

FORBES: The Great And Powerful New Ability-To-Repay Rule