根据结构二重性，这些非意图后果又构成农户无公害蔬菜安全生产的前提条件。
According to the duality of structure, those unintended consequences constitute the prerequisite of farmers' pollution-free vegetable production.
从斗拱的二重性，即结构和装饰性，在各个历史时期所产生的变化，体现了不同时期人们审美趣味的转化。
As the dual character of bucket arch, the framework and decoration have encountered some change during different history periods, and this change incarnates the change of human aesthetic gusto.
第一章主要论述了该小说的结构的二重性：统一性和松散性。
Chapter One discusses the structure of Go Down, Moses, focusing on its duality of unity and looseness.
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