英文關鍵字
above
aerial
area
barrow
blue
brown
building
cast
clay
construction
delf
devastated
devastation
development
earth
earthen
earthmoving
environment
equipment
european
excavator
extraction
field
grading
green
ground
heavy
industrial
industry
landscape
mine
open
outdoor
picking
pit
pitrun
production
quarry
red
soil
surface
technology
texture
top
truck
union
view
work
workplace
yellow