機器
activity
automobile
build
bulldozer
car
construct
construction
delivering
development
dig
dirt
dump
dump truck
dumper
dust
earth
earthmover
engineering
excavation
excavator
ground
heavy
horizontal
huge
industrial
industry
land
large
loader
loading
lorry
machinery
mining
mover
power
powerful
road
sand
site
soil
track
tractor
transport
transportation
truck
vehicle
wheel
work
yellow