I heard that she is major in dietetics .

我听说她是学营养学的。

Dietetics is an increasingly important science .

营养学变得越来越重要。

Dietitians have the option to specialize in areas like pediatric or renal dietetics .

营养师可以选择专门从事儿科，肾等营养学领域。

Anciently , in dietetics field , the primary research tasks are all about how to avert the lack of alimentation .

以往在营养学领域主要的研究课题都是如何防止营养缺乏。

American dietetics education and registered dietitian training system .

美国营养教育和注册营养师培养制度。