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Asian girl diligently studies online and does homework during summer break
Young hispanic teenager student walking around college campus, smiling at camera
Little tired exhausted ill sick insomnia problem African American boy son child kid at home table sleeping napping sleep lying on books studying fatigue pediatric tiredness medicine boring homework
Young female doctor working on her laptop in clinic recording patients' medical data A doctor with a smile consults a patient online, using innovative technologies to provide quality medical care.
Caucasian thoughtful pensive schoolboy at school looking at textbook reading book education study learning thinking difficult study learn task child boy kid pupil student at table desk think lesson

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