sniff out
柯林斯词典
1. PHRASAL VERB If you sniff out something, you discover it after some searching. 找出[非正式]
...journalists who are trained to sniff out scandal. …專門訓練來找出醜聞的記者。
2. PHRASAL VERB When a dog used by a group such as the police sniffs out hidden explosives or drugs, it finds them using its sense of smell. 嗅出 (爆炸物或毒品)
...a police dog trained to sniff out explosives. …一條受過訓練能嗅出爆炸物的警犬。
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