英文關鍵字
breaking
career
closeup
construction
crane
crushed
crushing
development
digger
digging
dust
earth
equipment
excavation
extraction
geology
greenery
grind
grinding
gritty
hardwork
hardworking
heavy
industrial
industry
lifting
machine
machinery
manufacturing
material
mechanical
mining
particles
production
refine
refining
rock
rocks
rocky
site
skillful
stone
stones
technology
transportation
truck
vehicle
work
working