英文關鍵字
activity
backhoe
blade
blue
boom
bucket
building
bulldozer
construction
dig
dirt
dredger
dump
dumper
earth
earthmover
equipment
excavation
excavator
gravel
highway
hydraulic
industry
load
loader
loading
machine
machinery
mover
outdoors
pour
quarry
risen
rock
sand
shovel
site
sky
soil
stone
tipper
tractor
truck
unloading
vehicle
wheel
work
yellow