a cold case

常见例句

The police do not always catch murderers. The evidence may be too limited, or the trail may run out of leads. The pursuit may end in a cold case.
警方不一定能把兇手繩之以法，可能因爲証據有限，或是失去線索，案件可能最終成爲一宗懸案。
The news routinely reports the solution of a cold case, a suspect excluded or a wrongful conviction overturned through advanced forensic technology.
新聞中經常出現毫無頭緒的舊案水落石出、疑人改列非嫌疑人、冤昭雪等故事，都是先進鑑識技術的功勞。
Afterwards, Bowles announced that his team had decided to carry out a cold case review, codenamed Operation Stratton, on the suspected murder of Emma Smith.
而後，鮑爾斯宣佈他的小組懷疑艾瑪·史密斯是被謀殺的，決定將對這樁懸案開展代號爲“斯特拉頓行動”的重新調查。

Although the case is reminiscent of episodes from the Cold War, Russia hailed the exchange as a positive development.