機器
action
activity
backhoe
bucket
cleaning
construction
dam
digger
digging
dirt
dredge
earth
engineering
equipment
excavation
excavator
ground
heavy
hydraulic
industrial
industry
lake
loader
machinery
mover
mud
nature
outdoors
pond
power
reservoir
sand
scoop
shovel
site
sky
soil
swamp
technology
vehicle
water
work
working
yellow