英文關鍵字
background
barricade
barrier
cage
close
closed
closing
concrete
dark
design
door
doorway
entrance
equipment
exit
feeling
fence
gate
give
gives
grate
grating
gray
grid
idea
industry
iron
lock
material
mesh
metal
metallic
moving
net
obstacles
old
opening
outdoor
outside
padlock
protect
protection
protective
right
room
rusty
safety
security
steel
strong
tool
trammel
wall
wallpaper
was
wire