英文關鍵字
career
clouds
cloudy
construction
crane
crushed
crushing
danger
development
digger
digging
drizzle
earth
equipment
excavation
extraction
geology
greenery
grind
grinding
hardwork
heavy
industrial
industry
lifting
machine
machinery
manufacturing
material
men
mining
rain
raining
refine
refining
rock
rocks
rocky
site
skillful
sky
stone
stones
technology
transportation
vehicle
work
workers
working