หลอดไฟฟ้า, เบา, กระเปาะ, โคมไฟ, กระจก, เปล่ง, ส่องสว่าง, สดใส, ไฟฟ้า, ความคิด, ที่เร่าร้อน
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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