อันตราย, ปุ่ม, สัญลักษณ์, ไอคอน, สัญญาณ, ความปลอดภัย, เป็นอันตราย, การเตือน, ความระมัดระวัง
Public Domain
ภาพถ่ายปลอดค่าลิขสิทธิ์ที่เกี่ยวข้อง
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