英文關鍵字
access
background
barer
barricade
barrier
border
caution
closeup
cordon
countryside
cross
danger
enter
entrance
fences
forbidden
forest
freedom
gate
isolated
isolation
keyhole
line
lock
locked
metal
not
object
old
open
out
outdoors
padlock
protect
protection
red
restricted
safe
safety
secret
secure
security
sign
steel
tape
warning
white
wooded