求翻译：日本就开始人工干燥粮食的开发研究工作，已发展几十年，经历了自然干燥—半机械化干燥—机械化干燥—程控全自动化干燥等过程。是什么意思？

Japan started the development of artificial drying of food research, has been developed for decades, experienced a natural drying - drying semi-mechanized - mechanized drying - programmable fully automated drying process.

Japan began artificial drying food research and development, 10, has been developing a few experienced natural drying - semi-mechanized drying mechanized drying--such as dry program-controlled automated process.

Japan starts the artificial seasoning grain development research work, has developed for several dozens years, has experienced the natural drying - semimechanized dry - mechanization dry - program control entire automation dry and so on the processes.

Japan begin artificial drying food research and development work has developed for decades, has experienced natural semi-mechanized dry-dry-dry-program-controlled automatic drying process of mechanization.

Japan begins the development and research of the dry grain of manpower, has already developed for decades, have gone through naturally drily - course such as being dry - mechanized and dry - programme-controlled and full-automatic and dry of the semi-mechanization.