Some were obviously unsuitable and could be ruled out at once. Others were borderline cases.

一些显然不合适，可以马上被排除。另一些勉强合格。

《柯林斯英汉双解大词典》

In borderline cases teachers will take the final decision, based on the student's previous work.

在难以定夺的情况下，教师将根据学生先前的作业做出最终评分。

《牛津词典》

The decision to repair is not easy, especially in borderline cases.

作出返修的决定不是容易的，在可修可不修的情况下尤其如此。

youdao

Although it is coy about details, the company says it will use software to filter out objectionable material and human reviewers to decide borderline cases.

ECONOMIST: Stop signs on the web

They can only appeal over papers where the child would be awarded a higher level - in other words, they can only appeal on borderline cases.

BBC: Hundreds of heads report concerns over Sats marks

The hope is to flag borderline cases or high-risk patients not spotted by existing tests--like a lean, 40-year-old nonsmoker with an innate vulnerability to heart attack--and target these patients for drugs or lifestyle changes.

FORBES: The Suggestive Gene