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Cold case
01
冷案
a criminal investigation that has remained unsolved for a significant period and lacks recent investigative leads
例子
The detective was assigned to the cold case unit, focusing on unsolved crimes that had gone inactive for years.
The family of the victim has never given up hope, continuing to push for answers in the decades-old cold case.
The murder, once thought to be a cold case, was reopened after new evidence emerged linking a suspect to the crime scene.
Advances in DNA technology have recently helped solve many cold cases that were previously considered unsolvable.
Despite being a cold case for over twenty years, the investigation gained renewed attention after a true crime podcast featured the unsolved mystery.
