carbohydrate - to provide energy, protein - for growth and repair, lipids - to provide energy, and to store it in the body and insulate it against the cold, minerals - needed in small amounts to maintain health (eg. salt), vitamins - needed in small amounts to maintain health (eg. fruit), fibre - to provide roughage to help the food move through the gut, water - needed for cells and body fluids,

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恢復自動保存: ?