英文關鍵字
1920x1080
air
aircondition
airconditioning
chimneys
condition
conditioning
exhaust
gas
hdv
heat
hidef
hot
metal
pipes
roof
rotate
smoke
spiral
stacks
turn
twirl
vent
ventilation
wind
英文關鍵字
1920x1080
air
aircondition
airconditioning
chimneys
condition
conditioning
exhaust
gas
hdv
heat
hidef
hot
metal
pipes
roof
rotate
smoke
spiral
stacks
turn
twirl
vent
ventilation
wind