ฉนวน, อาคาร, ฟ้าอ่อน, หลอดไฟนีออน, เบา, มืด, มุมมอง, อักษรเบรลล์, บล็อกอักษรเบรลล์, สีเหลือง
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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