七大营养元素、矿物质、脂类、蛋白质、维生素、碳水化合物、水和膳食纤维，对人体都有自我的独特的功能。
The seven major nutrient elements, minerals, lipid, protein, vitamins, carbohydrates, dietary fiber and water, all have their own unique functions to human body .
均衡膳食必须包括碳水化合物、蛋白质、脂肪、维生素、矿物质和纤维。
A balanced diet must contain carbohydrate, protein, fat, vitamins, mineral substances and fibre.
膳食纤维对于蛋白质代谢及氮平衡的影响不大，但可减少脂类和碳水化合物的吸收及利用。
Dietary fiber does not have significant effect on protein metabolism and nitrogen balance, but some fiber can decrease the absorption and availability of lipids and carbohydrates.
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