ท่อ, กระจก, บทคัดย่อ, พื้นหลัง, เซนติกรัม, กราฟิก, ฉากหลัง, การหักเห, หมุน, แบบแผน
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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