機器
auto
automobile
background
big
black
building
bulldozer
car
cement
construction
construction site
dump
earthmover
equipment
excavation
grader
ground
heavy
huge
industrial
industry
iron
large
lorry
machinery
metal
mining
new
pattern
power
quarry
road
rubber
sand
site
soil
texture
tire
track
tractor
transport
transportation
tread
truck
tyre
vehicle
wheel
work
yellow