บทคัดย่อ, พลังงาน, fractals, ช่องว่าง, ดิจิตอล, มากมาย, ควัน, คลื่น, การทำสมาธิ, เกลียว, เบา
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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