tracker dog

• n. (擅长追踪的)警犬

tracker dog的用法和样例：

例句

用作名词 (n.)

1. The police used tracker dogs to find the criminal.
   警察用警犬寻找罪犯。
2. A police dog had found him beneath a nearby house.
   有一只警犬在附近的一所房子下面找到了他。