somebody's trail/scent is coldTRAIL/SCENTLONG TIMEused to say that you cannot find someone because it has been too long since they passed or lived in a particular place 某人已经踪迹全无 I tracked the boy as far as the factory, but there his trail went cold. 我追踪那名男孩一直到工厂,但在那里失去了他的踪迹。
somebody’s trail/scent is cold• The trail seemed cold until a woman in Mississippi recognized Pearson's face in a wanted poster.
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