ลูกโป่ง, สี่เหลี่ยมผืนผ้า, การสื่อสาร, พูดคุย, สื่อสาร, ด้วยกัน, โต๊ะกลม, กระดานสนทนา, การสนทนา
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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