created sense approved 疑案 · yí'àn · mystery
疑案
yí'àn
mystery
a controversial or suspicious matter that is open to debate and lacks a definitive explanation
这段历史的真实性始终是一个学术疑案。
noun
created sense approved 疑案 · yí'àn · unsolved case
疑案
yí'àn
unsolved case
a criminal or legal case that remains unresolved due to a lack of evidence or clarity
这桩离奇的命案成了警方多年未破的疑案。
noun