เด็ก, แว่นขยาย, การสังเกต, ฤดูใบไม้ผลิ, ดอกไม้, การศึกษา, วิทยาศาสตร์, ความอยากรู้
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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