柯林斯词典sniffer dog (sniffer dogs) 1. N-COUNT A sniffer dog is a dog used by the police or army to find explosives or drugs by their smell. 嗅探犬 返回 sniffer dog剑桥词典a dog that is trained and used by the police or army to find hidden drugs or bombs , or to find someone the police are looking for, using its sense of smell 嗅探犬（经过训练专门用于嗅探毒品和炸弹的狗） 返回 sniffer dog