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The Gold System in Japan
A system of multicolored pipes together
An old abandoned house in semi-darkness
The system of space with stars and planets
Planets of the solar system-Earth, Mars, Venus, Jupiter, Saturn, Neptune
Venous circulation system of the hand
Venous circulation system of the foot
Blue-style Mac operating system
A system unit for a PC with a beautiful design
Windows operating system logo on a black background
Ubuntu icon from the Ubuntu operating system
Collision of robots. Cyborgs against the system