機器
action
activity
area
blade
building site
bulldozer
busy
civil engineering
construction
contractor
crawler
earth mover
earthmover
earthwork
equalization
equalizes
equates
flatting
front
ground
heap
heavy duty
hydraulic
industrial
industry
land
landscape
level
machinery
manage
mechanical
mechanization
move
operate
pile
piled
powerful
push
site
soil
spread
spreading
steel
tool
transfer
transform
work
yellow
zone