博士の帽子のアイコン（角帽マーク）
Schlüsselwörter
doctor,
hat,
icon,
silhouette,
academic,
mortarboard,
graduation,
mark,
degree,
acquaintance,
school,
design,
image,
graduate,
illustration,
hat,
student,
school,
teaching,
graduation,
college,
wisdom,
ceremony,
training,
learning,
metaphor,
memory,
art,
illustration,
study,
symbol,
graduate,
achievement,
black-and-white,
monochrome
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