The nature, city, mankind become an organic whole, forming the structure of mutualistic symbiosis.
自然、城市、人类融为有机整体，形成互惠共生结构。
Based on the mutualistic symbiosis relationship of rice and duck, jointed with no-tillage technique, the new no-tillage system of raising duck in paddyfield was formed.
在利用稻鸭互利共生的关系的基础上，将免耕技术引入稻田生态系统，形成稻田免耕养鸭技术新体系。
Based on the mutualistic symbiosis relationship of rice and duck, jointed with no-tillage technique, the new no-tillage system of raising duck in paddyfield was formed.
在利用稻鸭互利共生的关系的基础上，将免耕技术引入稻田生态系统，形成稻田免耕养鸭技术新体系。
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