求翻译：因而它由食物原料（生产、开发、选择、分类等）、加工技术和制作工艺、保藏、保鲜、饮食商业和服务、加工工具和饮食器具，以及有关习俗、制度、心理、思想等构成了特定的学科领域。是什么意思？

Thus it is by the Food and raw materials (production, development, selection, classification, etc.), process technology and production processes, preservation, preservation, commercial and food service, processing tools and eating utensils, as well as the practices, systems, psychological, ideologic

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Thus it by food raw material (production, development, choice, classification and so on), the processing technology and the manufacture craft, the preservation, maintains freshness, the diet trade and the service, the finishing tool and the diet appliance, as well as the related custom, the system,

Thus it by the food and raw materials (production, development, selection, classification, and so on), processing technology and production processes, preservation, processing, preservation, food business and service tools and eating utensils, and related practices, institutional, psychological, phi