英文關鍵字
atacama
big
carbon
chile
coal
dig
digger
dirt
dirty
driving
dump
dumper
dust
earth
energy
engineering
equipment
excavate
excavation
excavator
extraction
fuels
heap
heavy
huge
industrial
industry
iron
labour
land
large
load
lorry
machine
machinery
mine
mineral
mover
opencast
ore
pollution
power
quarry
strength
transportation
truck
vehicle
wheels
works
yellow