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What are engines?


What are engines?

An engine is a device that continuously generates energy and is used in cars, motorcycles, farm equipment, etc.

Among the engines, there are white engines and black and white engines.

The white engine has a lot of aluminum material, and the black and white engine has a lot of iron material. (white means aluminum, black means iron)

​ engines

White engine, black and white engine, etc.

  Included in engines

​ engine class example

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