the primary affection

例句：

1. 1. The primary goal of the project is to improve efficiency.
   该项目的首要目标是提高效率。
2. 2. The primary reason for the delay was a lack of resources.
   延误的主要原因是没有资源。
3. 3. The primary function of this tool is to analyze data.
   这个工具的主要功能是分析数据。