悬案的英文：
unsettled case; unsettled question

参考例句：

This is an unsettled law case.
这是一桩悬案。

It's time to clean up these pending cases
该解决这些悬案了。

The justices are driving hard to clean up pending cases
法官们正在尽力清理悬案。

unsettled是什么意思：
a. 未处理的,未决定的

His sense of humour was really unsettling.
他的幽默感确实令人不安。

Conditions in the coastal towns were unsettled after the hurricane.
飓风过后沿海城镇的形势颇不稳定。

The written judgment, published in June, is a profoundly unsettling document.
书面判决书在6月公布，着实让人不安。

But the stark songs they decorated were bleak, unsettling.
只是他们为之点缀的朴实歌曲是暗淡不安的。

Were still unsettled with respect to their future plans.
对于他们有关未来的计划仍然心怀疑虑

question是什么意思：
n. 问题；疑问；难题；询问；审问；疑问句
v. 询问；怀疑；探究

This is a relevant question.
这是一个中肯的问题。

It was a gift of a question.
解答那一道题不费吹灰之力。

This is a multiple question.
这是个复杂的问题。

That is not the point in question.
那不是要考虑的要点。

That is beside the question.
那和这个问题不相干。