entity theory

例句：

1. 1.The theory of evolution by natural selection is widely accepted by scientists.
   自然选择进化论被科学家广泛接受。
2. 2. The study of entities in the real world is a complex field that requires advanced mathematical tools.
   研究现实世界中的实体是一个复杂的领域，需要高级数学工具。
3. 3. The entity theory of information has been a topic of debate among computer scientists for decades.
   信息实体理论一直是计算机科学家几十年来争论的主题。