เด็ก, มือ, คน, การทดลอง, แรงบันดาลใจ, ความคิดสร้างสรรค์, มือมนุษย์, คนคนหนึ่ง, ผู้ชาย, ผู้ใหญ่, ใกล้ชิด
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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