nutritionsn.滋补；营养品名词nutrition的复数形式.nutritionn.营养Nutritional knowledge营养知识nutritional safeguard营养保障nutrition improvement营养改善Nutritional additives营养添加剂nutrition of pregnant孕妇营养nutrition composition营养成分nutrition measuration营养测定nutritional condition营养条件nutrition-defective营养缺陷型nutritional chemistry营养化学