cold case
US /ˈkoʊld keɪs/
UK /ˈkoʊld keɪs/
1.
懸案, 未偵破案件
an unsolved criminal investigation that has been closed but could be reopened if new evidence emerges
:
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Detectives reopened the cold case after a new witness came forward.
一名新證人出現後，偵探們重新啟動了這起懸案。
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The documentary explored several famous cold cases.
這部紀錄片探討了幾起著名的懸案。