Electricity is used for light, heating, power and to defend the ship against attacks.

电被用来照明、取暖以及获得能量，并用来保护潜艇以免受到攻击。

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Electricity is used for light, heating, power and to defend the ship against attacks.

电被用来照明、取暖以及获得能量，并用来保护潜艇以免受到攻击。

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