Bone meal from slaughterhouses, sugar beet waste and waste from other fermentation industries such as those that produce bioethanol are all likewise plentiful and protein rich.

来自屠宰场的骨粉、甜菜废料和其他发酵工业（例如生产生物乙醇的工业）的废料同样丰富且富含蛋白质。

Then there are High Protein Diets. The main principle is that protein rich foods are not as easily broken down by the body and take more energy to digest than carb-rich food.

下面介绍高蛋白饮食法。主要原理是高蛋白食物，不会像高碳水化合物那样易被身体分解。并且消化所消耗能量也更多。