英文關鍵字
action
activity
bucket
build
building
bulldozer
business
close
construction
development
digger
dirt
earth
earthmover
equipment
excavation
excavator
grader
ground
heavy
hydraulic
industrial
industry
land
large
loader
machine
machinery
mover
moving
platform
power
quarry
road
roadwork
sand
scoop
shovel
site
soil
technology
track
tractor
transport
transportation
vehicle
wheel
work
yellow