การติดต่อกัน, สัมพันธ์, คงที่, ด้วยกัน, สนับสนุน, ทีม, การเชื่อมต่อสกรู, โลหะ
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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