英文關鍵字
admin
bodyguard
bodyguards
campus
check
class
college
computer
corridor
crime
education
entrance
events
guard
hall
hallway
id
lock
locker
male
monitoring
monitors
office
online
operator
patrolling
prevention
professors
property
protection
room
safe
safeguard
safety
school
secure
security
service
space
staff
storage
student
students
study
surveillance
talkie
uni
uniform
university
workplace
young
youth