英文關鍵字
action
activity
bucket
build
bulldozer
cast
construction
development
digger
digging
dust
engineer
environment
equipment
excavation
excavator
gravel
hardhat
heavy
helmet
hydraulic
industrial
industry
job
loader
loading
machine
machinery
man
mine
mover
ore
people
quarry
rock
sand
scoop
shovel
site
soil
technology
truck
ukraine
vehicle
work
worker
working
yellow