機器
activity
background
backhoe
backhoe loader
builder
building
bulldozer
children
concept
construct
construction
construction industry
construction vehicle
contractor
dig
digger
digging
drive
engineering
equipment
excavate
excavation
excavation vehicle
excavator
heavy
hydraulic
industrial
industry
loader
loading
machinery
mining
plastic
play
power
scoop
shovel
shoveling
soil
technology
toy
tractor
transportation
truck
vehicle
wheel
white
work
yellow