英文關鍵字
belaz
blasted
boulders
career
clay
coal
dust
equipment
excavator
hydraulic
industry
large
limestone
loading
loads
miner
ore
quarry
rock
rocks
sand
shovel
transportation
truck
work
worker
英文關鍵字
belaz
blasted
boulders
career
clay
coal
dust
equipment
excavator
hydraulic
industry
large
limestone
loading
loads
miner
ore
quarry
rock
rocks
sand
shovel
transportation
truck
work
worker