英文關鍵字
alpine
big
car
career
coal
driving
dump
dumper
heavy
huge
industrial
industry
load
machine
mine
mining
opencast
ore
phosphate
quarry
road
transportation
truck
unload
vehicle
英文關鍵字
alpine
big
car
career
coal
driving
dump
dumper
heavy
huge
industrial
industry
load
machine
mine
mining
opencast
ore
phosphate
quarry
road
transportation
truck
unload
vehicle