เรียน, ออนไลน์, แล็ปท็อป, ชาย, เขียน, แป้นพิมพ์, อิเล็กทรอนิกส์, โลก
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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