精选优质文档-倾情为你奉上第一课 营 养1、营养的定义：Nutrition might be defined as the process whereby we obtain the essential nutrients and use them to make many other substances our bodies need. 营养可定义为人们赖以获得的必须营养素，并利用这些营养素来制造人体所需的其他物质的过程。2、营养过程的分类：This process would include eating and digesting food and absorbing and using， or metabolizing， the nutrients it contains.这一过程理应包括摄入和消化食物以及吸收和利用（即同化）其中所含的营养素。3、营养物质：The ingredients that give us nourishment are called nutrients. These nutrients are catego
