psychologic operations approach

例句：

1. 1. The study of psychology is important for understanding human behavior.
   研究心理学对于理解人类行为很重要。
2. 2. He has a psychological problem that affects his work performance.
   他有一个心理问题，这影响了他的工作表现。
3. 3.Psychology is the study of the mind and behavior.
   心理学是研究心智和行为的学科。