Adult teacher posing on blackboard.
Schlüsselwörter
adult,
adults only,
beard,
blackboard,
button down shirt,
casual clothes,
cheerful,
classroom,
color image,
copy space,
education,
expertise,
explaining,
fashion model,
friendship,
front view,
grey hair,
holding,
horizontal,
indoor,
intelligence,
lecture hall,
lifestyle,
looking,
male,
mature adult,
man,
occupation,
one man only,
one person,
patience,
people,
portrait,
prof,
shirt,
showing,
smiling,
standing,
teacher,
teaching,
wisdom
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