英文關鍵字
anthropogenic
cast
chalk
clay
dragline
dump
excavator
haul
landscape
limestone
load
mine
mining
mountains
open
openpit
pit
quarry
rock
transporting
transports
truck
walking
英文關鍵字
anthropogenic
cast
chalk
clay
dragline
dump
excavator
haul
landscape
limestone
load
mine
mining
mountains
open
openpit
pit
quarry
rock
transporting
transports
truck
walking