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Why do Russian submarines have windows? The deck of the warship is still red, so why do you have to be different from others? Hello everyone, I am your ”Encyclopedia Uncle” Rocket Uncle ~ Telling interesting science and teaching talented creators! Through the description of natural science and social science knowledge, outline the overall outline of the scientific knowledge picture! If you want to know more, please go to [Uncle Scientific Rocket]-subscribe to me if you like me, and don't forget to click on Little BellYour support is precious to me!kexuehuojiansh... Scientific Rocket Uncle# Submarine# Popular Science# Culture