무척추동물 arachnid 대기 invertebrate 수업 arthropod 거미 거미줄 lesson wallpaper caption black web atmosphere spider_web sky 백그라운드 암흑 spider material 직물 블랙 webs 대기층 background 하늘 darkness

spider web

the spider web taught us that to see the fair and white colour of other we need to create black background.