機器
action
activity
base
blade
building
bulldozer
construction
crushedstone
dirty
dump
edifice
engineering
equipment
grade
grader
gravel
hydraulic
industrial
ladle
landfill
layout
leveling
machinery
motor
mover
outdoors
outside
plaining
powerful
road
roadwork
scoop
site
technical
track
tractor
transport
way
wheels
work