1. The degree of centrality in a network is determined by how connected a node is to the other nodes.
网络中的中心性程度取决于节点与其他节点的连接程度。

2. The centrality of the main character is crucial to the plot of the story.
主角的中心性对于故事的情节至关重要。

3. The centrality of a city can influence its economic and political power.
一个城市的中央性可以影响其经济和政治实力。