英文關鍵字
asphalt
asphalting
background
bitumen
bucket
building
bulldozer
compactor
construction
dig
digger
driveway
earthworks
engineering
equipment
excavation
excavator
factory
forest
gravel
heavy
hot
hydraulic
industrial
industry
loader
machine
machinery
new
paving
power
quarry
repair
road
rock
roller
rubble
sand
shovel
site
soil
stone
street
tractor
transport
transportation
truck
unloading
vehicle
vibration
wheel
work
worker
yellow