英文關鍵字
tape
caution
protection
danger
warning
safety
barrier
security
white
forbidden
red
barricade
construction
sign
line
striped
stop
restricted
zone
ground
background
hazard
attention
accident
ribbon
symbol
boundary
dangerous
crime
police
plastic
protect
cordon
strip
scene
barriers
fence
site
isolated
work
equipment
virus
area
outdoor
covid19
coronavirus
park
no
people
outbreak
stripe