1·A police dog picked up the murderer's scent.
一条警犬嗅出了凶手的气味。
—— 《柯林斯英汉双解大词典》
2·About 15 funerals have been held at the center, including one attended by some 500 people for a police dog killed in the line of duty.
在中心已经举行了15起葬礼，包括为了纪念一条在值勤中被杀死的警犬，它的葬礼有约500人出席。
3·I have a friend who has a large police dog called Jack.
我有个朋友，他有只叫做杰克的大警犬。
4·A police dog follows a scent.
一条警犬在追踪着气味。
5·Police dog guards the peace of the Yuzhno-Kurilsk citizens.
警犬守护着南库里尔斯克市民的安全。