英文關鍵字
alarm
alert
background
building
burn
caution
colorful
control
danger
emergency
equipment
escape
evacuation
extinguish
extinguisher
fire
firefighter
gauge
guard
guards
heads
helmet
industrial
industry
mock
person
pipeline
precaution
pressure
prevent
prevention
protect
protection
pump
red
rescue
risk
safety
security
service
smoke
sprinkler
staff
system
technician
technology
training
valve
wall
warning
watercourse