求翻译：改革开放以来，我国烟草农业的发展取得了很大成就，特别近几年来，基础设施建设得到了加强和改善，烟叶生产技术体系日趋完善，烟叶生产整体水平不断提高。但是必须看到，我国烟草农业的基础还不稳固，一些制约我国烟草农业发展的深层次矛盾依然没有消除。要保持烟叶生产的可持续发展，还需要打牢基础，创新发展模式，转变烟草农业的增长方式，加强烟区现代物质条件装备，用现代科学技术改造传统农业，建设现代烟草农业。是什么意思？

Since reform and opening, China's tobacco agricultural development has made great achievements, especially in recent years, infrastructure has been strengthened and improved, tobacco production technology system is being completed, increasing the overall level of tobacco production. However, we must

Since reform and opening up, China's tobacco agriculture had achieved a great deal of development, particularly in recent years, construction of infrastructure facilities have been strengthened and improved production technologies, tobacco leaf, increasingly improved overall production system and ra

Since the reform and open policy, our country tobacco agriculture development has obtained the very great achievement, specially in the last few years, the infrastructure construction obtained strengthened and improves, the leaf tobacco production technology system consummated day by day, the leaf t

Since reform and opening up, tobacco agriculture development in China has made great achievements, particularly in recent years, the infrastructure was strengthened and improved, tobacco production system improvement, tobacco production overall level continues to increase. But must see, tobacco agri

Since reform and opening up, tobacco agriculture development in China has made great achievements, particularly in recent years, the infrastructure was strengthened and improved, tobacco production system improvement, tobacco production overall level continues to increase. But it must be noted that