Do you think the prosecution made any particular errors, or did they just have a weak case?

你认为控方是真的出了纰漏，还是只是证据不足？

《柯林斯英汉双解大词典》

As he had a weak case and could not defend himself, he had to resort to sophistry.

他理屈词穷，只好求助于诡辩。

《新英汉大辞典》

In the case of Groupon the network effects are comparatively weak.

而就团宝的情况而言，网络效应的作用相对较弱。

youdao

He is an old,weak man and his case is severe.

VOA: special.2009.08.01

It's not the case that for Hannibal, choosing the easy pass to attack through, strictly dominates choosing the hard pass, but it is the case that there's a weak notion of domination here.

对汉尼拔而言,选择平坦之途入侵并不是,严格优于选择崎岖之途的,但是在这种情况下有一个弱优势

耶鲁公开课 - 博弈论课程节选

Judge Wright may view them as lawyerly confections designed to bolster a weak case.

CNN: Now It's Her Turn

Mary Higgins QC, for Daly, also contended that her client was facing "a weak case based on a scintilla of evidence".

BBC: Omagh bomb scene

The companies, in survival mode and out of pure self-interest, jump at the chance, as even a weak government case can destroy them.

FORBES: Justice 'Deferred'