英文關鍵字
activity
big
build
capacity
car
clouds
complex
construction
crawler
cycle
dig
dusk
dust
earth
earthwork
equipment
excavation
excavator
gravel
heavy
hill
huge
hydraulic
industrial
industry
job
lake
loading
machine
machinery
mud
nature
output
performance
professional
pump
quarry
relief
sand
scoop
technology
transportation
vehicle