英文關鍵字
blade
bucket
bulldozer
cast
construction
contractor
development
dig
digger
dirt
dredger
dump
earth
equipment
excavate
excavation
excavator
gravel
ground
grub
heavy
industrial
loader
loading
lorry
machine
machinery
massive
mine
pit
power
quarry
road
rock
sand
sandpit
scoop
shovel
site
soil
tipper
tractor
transport
trench
truck
vehicle
work
yellow