英文關鍵字
1800s
1900s
19th
air
animation
architecture
artwork
board
building
century
chimney
cross
crossbones
crosshatch
crosshatching
doodle
drawing
drawn
engraved
environmental
exhaust
exterior
factory
flickering
global
graphic
hand
handmade
hatch
historical
history
illustration
industrial
industry
ink
landscape
line
machinery
manufacturing
neon
parallel
pipe
poison
pollute
pollution
revolution
scratch
scratched
shading
sign
sketch
skull
sky
smoke
smokestack
symbol
technology
toxic
warehouse
warming
workplace