แล็ปท็อป, จอภาพ, แป้นพิมพ์, กุญแจ, สมุดบันทึก, คอมพิวเตอร์, ดิจิตอล, อินเทอร์เน็ต
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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