Currently, 27 states require that dieticians be licensed in order to perform these services. Training includes courses in physiology, dietetics, nutrition, gerontology, and related subjects.
目前，为了执行这项服务，27个国家需要认证的营养师训练包括生理学，饮食学，营养学，老年医学，和其它相关的一些课程。
Food composition studies are not only basic, but also essential for many purposes in nutrition, food science, and dietetics.
食物成分的研究在食品科学和人类营养学研究中既是应用基础、又是研究工具。
For answers, I spoke with Leslie Bonci, director of sports nutrition at the University of Pittsburgh Medical Center and a certified specialist in sports dietetics.
为了获得解答，我采访了来自匹兹堡医学中心大学的体育营养系主任，体育饮食认证专家Leslie Bonci。
For answers, I spoke with Leslie Bonci, director of sports nutrition at the University of Pittsburgh Medical Center and a certified specialist in sports dietetics.
为了获得解答，我采访了来自匹兹堡医学中心大学的体育营养系主任，体育饮食认证专家Leslie Bonci。
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