【句子】
It is the interaction between people, rather than the events that occur in their lives, that is the main focus of social psychology.
社会心理学的主要焦点是人与人之间的交往，而不是他们各自生活中的事件。
【解析】
1.interaction
1)n.相互作用；相互影响；互动交流
Price is determined through the interaction of demand and supply.
价格在供需的相互作用中形成。
2)近义词
