機器
activity
big
bulldozer
car
cargo
carry
construction
development
dirt
dump
dumper
earth
equipment
excavate
excavation
excavator
ground
heavy
hydraulic
industrial
industry
land
load
loader
loading
machinery
mechanical
mining
mover
quarry
road
sand
site
soil
tipper
transport
transportation
truck
unload
unloading
vehicle
work
yellow