英文關鍵字
access
alarm
animated
area
background
burglar
closed
concept
conductive
danger
dark
defence
design
effect
electric
electricity
enclosure
end
evacuation
fence
graphic
high
illustration
intruder
keep
light
mechanism
middle
motion
out
private
property
quarantine
risk
row
security
shock
sign
technology
trespassing
unauthorized
video
volt
voltage
wire
yellow
zone
zooming