การสัมมนาทางเว็บ, การประชุม, วีดีโอ, โทร, ลูกเบี้ยว, พูดคุย, ซูม, สื่อสาร, การสื่อสาร, คอมพิวเตอร์, แนวคิด
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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