機器
base
blade
civil
close
closeup
construction
contouring
course
design
detail
dirt
dirty
drainage
earthworks
engineering
equipment
finished
foundation
fragment
grader
grading
gravel
heavy
improvements
industrial
industry
leveling
machinery
mechanics
mechanism
motor
power
powerful
process
real
road
sandy
shabby
subgrade
surface
tattered
tractor
up
working
works