英文關鍵字
reconstruction
excavator
grader
machinery
equipment
machine
bulldozer
industry
road
vehicle
construction
tractor
work
transportation
truck
industrial
heavy
transport
earth
soil
excavation
sand
loader
ground
shovel
site
digger
aerial
power
development
dirt
land
hydraulic
engineering
dig
large
big
backhoe
outdoors
scoop
technology
highway
yellow
wheel
drone
gravel
asphalt
mining
activity