เสียงหึ่งๆ, การบิน, เทคโนโลยี, หมดกำลังใจ, เรือ, หุ่นยนต์, วิศวกรรม, ใบพัด, ยานพาหนะทางอากาศ, เฮลิคอปเตอร์, สีน้ำเงิน
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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