英文關鍵字
brave
cap
car
colleagues
confident
control
cop
dangerous
duty
enforcement
experienced
force
friendship
greeting
guard
job
justice
law
male
man
occupation
officer
order
patrol
patrolman
people
police
policeman
posing
prevention
profession
professional
protection
public
respectable
responsibility
responsible
safety
security
serious
service
shift
smiling
station
teamwork
traffic
trainees
uniform
vehicle
work