เงา, หัว, นักเรียน, ครู, การสอน, การศึกษา, โรงเรียน, เรียน, การอบรม, ความรู้, ใจ
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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