英文關鍵字
alpine
bad
big
bucket
career
caterpillar
coal
crawler
dipper
excavator
far
heavy
huge
industrial
industry
machine
mine
mining
north
opencast
ore
phosphate
quarry
snowfall
snowstorm
weather
winter
英文關鍵字
alpine
bad
big
bucket
career
caterpillar
coal
crawler
dipper
excavator
far
heavy
huge
industrial
industry
machine
mine
mining
north
opencast
ore
phosphate
quarry
snowfall
snowstorm
weather
winter