Science wallpaper on Desktop in the section Holidays / page 71

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Macro photography a drop of water on a blue background

Macro photography A drop of water on a blue background

An unusual picture for the desktop

Display shelves on a blurry background

Invasion of robots. a frame from the movie

Invasion of robots. A frame from the movie

Three huge robots and people

Pacific frontier huntsman on guard

Pacific Frontier huntsman on guard

Fantasy war, live gramil robots

A shot from the movie star trek

A shot from the movie star Trek

Opening of the olympic games at the stadium

Opening of the Olympic Games at the stadium

Underwater tunnel at the bottom of the ocean

Blue spherical sphere at night

A large meadow hangs over a smooth mountain lake

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Система знаний о закономерностях в развитии природы, общества и мышления, а также отдельная отрасль таких знаний. То, что поучает, даёт опыт, урок (в 4 знач.; разг. ).