機器
activity
blue
bulldozer
coal
construction
contruction
digging
dirt
earth
eathmoving
equipment
gravel
heavy
hydraulic
industry
lake
land
large
loader
loading
machinery
metal
mine
mineral
mining
mover
openpit
outdoors
people
pit
platform
power
quarry
removing
sand
scoop
site
size
sky
strength
technology
tractor
transportation
truck
vehicle
water
working
yellow