英文關鍵字
bulldozer
clean
close
closeup
construction
cylinder
detail
dozer
engineering
hydraulic
industrial
light
machine
machinery
metal
modern
new
orange
pipe
pneumatic
press
pressure
pump
robot
robotic
shovel
smoke
steam
steel
tractor
wire
yellow
英文關鍵字
bulldozer
clean
close
closeup
construction
cylinder
detail
dozer
engineering
hydraulic
industrial
light
machine
machinery
metal
modern
new
orange
pipe
pneumatic
press
pressure
pump
robot
robotic
shovel
smoke
steam
steel
tractor
wire
yellow