英文關鍵字
activity
block
construction
cut
digging
dust
environment
equipment
excavate
excavation
excavator
extraction
geology
granite
gravel
ground
heavy
huge
industrial
industry
job
landscape
limestone
machine
machinery
marble
material
mine
mineral
mining
nature
outdoor
pit
priming
quarry
raw
resource
rock
sand
solid
stone
surface
technology
tipper
tool
transport
transportation
work