适合各种情况（年龄、性别、生理条件、劳动负荷、健康状态等）的食物、营养素供给量和配比。合理营养可维持人体的正常生理功能，促进健康和生长发育，提高机体的劳动能力、抵抗力和免疫力，有利于某些疾病的预防和治疗。缺乏合理营养将产生障碍以至发生营养缺乏病或营养过剩性疾病（肥胖症和动脉粥样硬化等）。
目的：解决城市学龄儿童合理营养问题。
Objective: To solve reasonable nutrition of schoolchildren in city.
发言人还强调了教育孩子合理营养的重要性。
The speaker also emphasizes the importance of teaching children about proper nutrition.
目的倡导居民平衡膳食、合理营养、促进健康。
Objective To promote a balanced diet of the residents, rational nutrition and health promotion.
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