機器
action
adaptation
building
bulldozer
business
civilization
commercial
concern
construction
country
digging
dirt
earth
earthwork
earthworks
engineering
equipment
establishment
extreme
firm
geodesy
geodetic
grader
ground
hard
highway
industrial
infrastructure
instruments
mechanism
mechanization
museum
offroad
old
outdoor
power
site
soviet
spadework
stripper
strong
structure
technology
terrain
tools
transport
vehicle
work