similarity theory

例句：

1. 1.The study of similarities between different cultures is a fascinating field of research.
   研究不同文化之间的相似之处是令人着迷的研究领域。
2. 2.This similarity theory has been proven to be effective in solving complex problems.
   这种相似理论已被证明在解决复杂问题方面是有效的。
3. 3.The similarity theory suggests that all living organisms share a common ancestor.
   相似理论表明所有生物都有共同的祖先。