機器
big
black
bucket
building
bulldozer
collar
construct
construction
digger
digging
dirt
earth
equipment
excavator
front
heavy
hydraulic
industrial
industry
land
loading
machinery
manual
mechanic
mechanical
metal
mining
mode
mover
moving
nobody
occupation
orange
pivot
power
safety
scoop
sky
strength
tool
transportation
vehicle
wheel
white
working
yellow