英文關鍵字
action
activity
backhoe
big
blade
blue
bucket
building
bulldozer
cloudscape
construction
contractor
development
dig
digging
dirt
earth
earthmover
equipment
excavate
excavation
excavator
gravel
heavy
hydraulic
illustration
industry
large
loader
loading
machine
machinery
mining
mover
outdoors
power
sand
scoop
shovel
site
soil
tractor
truck
unloading
vehicle
work
working
yellow