互补广泛存在于自然界、社会生活和思维领域中。互补是世界万物生存与发展的自然规律 ,也是人类在长期的生存实践中总结出来用以协调诸多关系的基本原理。万物之所以需要互补而且能够实现互补 ,是由于世界是一个统一体 ,统一体内各部分彼此相依相存 ,统一体内各部分之间总在寻求平衡。互补具有认识论意义 ,它对我们认识世界有许多启示 Complementarity exists widely in the fields of nature, society, and thinking. Complementarity is the natural law for the survival and development of all things in the world. It is also the basic principle that mankind summarized in long-term survival practice to coordinate many relationships. The reason why everything needs to be complementary and complementary can be attributed to the fact that the world is a united body, the parts of the united body co-exist with each other, and the parts of the united body are always seeking a balance. Complementarity is epistemological, which has many implications for our understanding of the world