英文關鍵字
activity
background
bucket
building
bulldozer
business
construction
crane
debris
dig
digger
disposal
earth
earthmover
equipment
excavation
excavator
field
ground
heavy
hydraulic
icon
industrial
industry
ladle
land
loader
machine
machinery
mechanical
mining
motion
mover
power
produce
scoop
shovel
sign
site
sky
soil
technology
tractor
transport
transportation
truck
vehicle
work