英文關鍵字
above
aerial
barrow
borrow
brown
clay
construction
delf
delft
devastation
development
earth
earthen
environment
equipment
europe
excavator
extraction
field
grading
green
ground
heavy
industrial
industry
kaolinite
kaznejov
landscape
mine
open
outdoor
output
pit
pitrun
production
productivity
quarry
quarrying
site
soil
strip
technology
texture
top
toxic
truck
view
work
yellow