Arabian male yoga instructor holding outdoor session - holding his foot and talking to his students
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Medium shot of Caucasian male photographer holding smartphone and talking with his assistant while working together in equipped photo studio
Upset student holding his head
Caucasian male surfer holding a wooden surfboard and using his smartphone
Scientist Assistant Takes Notes in Laboratory, Assistant Checks Glass Jars
Man using smartphone in public square.
The student's hands are holding a phone. A boy uses an application on his smartphone close-up
Dolly-in portrait shot of smart male mathematician with serious expression on his face standing with his arms crossed before blackboard with complex calculus formulas
student leaving college holding his textbooks and rucksack
Student counting task on his calculator and receiving positive result
Man holding a smartphone in his hands and using an app. Hand holding smartphone device and touching screen.
Male biker holding his hands on motorcycle handlebar