บทคัดย่อ, เรืองแสง, พื้นหลัง, คลื่น, วอลล์เปเปอร์, ทันสมัย, ง่าย, ความคิดสร้างสรรค์, ออกแบบ, เบา, เงียบสงบ
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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