蛋白质是人体首要的营养素。在不同年龄,蛋白质的作用重点不同。童年时代,蛋白质起的是生长发育的关键性作用,好比盖高层建筑的地基,楼层的骨架、梁柱;到了成年以后,蛋白质的作用重点就转向了维持和保证机体的原有状态和功能;如果成年人体弱、生病,蛋白质又要承担新的功能,即进 Protein is the body’s primary nutrient. At different ages, the focus of protein is different. Childhood, the protein plays a key role in the growth and development, such as the high-rise building foundation, floor skeletons, beams and columns; to adulthood, the focus of the role of the protein turned to maintain and ensure the body’s original state and function; If the adult is weak and sick, the protein has to take on new functions