機器
activity
bay
build
building
bulldozer
business
car
coast
concrete
construction
dam
dig
digger
dirt
dump truck
earth
embankment
engineering
equipment
excavate
excavation
excavator
excavators
ground
heavy
hydraulic
industrial
industry
lake
loader
machinery
outdoor
power
quarry
river
road
sand
shore
shovel
soil
strengthen
technology
tractor
transport
transportation
truck
vehicle
water
work