Blackboard or chalkboard
Schlüsselwörter
blackboard,
black,
board,
blackboard,
education,
empty,
grey,
nobody,
chalk,
photograph,
notice board,
communication,
grey,
macro,
rubbed,
photo,
school,
blank,
slate,
smudged,
horizontal,
abstract,
wall,
background,
billboard,
design,
class,
classroom,
surface
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