police officer是不是可数名词
police officer是可数名词,直接在末尾加s。
police officer
n.警察；
复数 police officers；
例句
A police officer was killed when his car blew up.
He was returned to prison in 1977 for impersonating a police officer
他1977年因冒充警官而再次入狱。
The police officer took my name and address.
警察记下了我的姓名和地址。
The police officer was suspended while the complaint was investigated.
投诉调查期间，这位警员被暂停职务。