track index

例句：

1. 1. The team used a track index to analyze the data.
   该团队使用跟踪索引来分析数据。
2. 2. The researcher developed a new track index to improve efficiency.
   研究员开发了一种新的跟踪索引以提高效率。
3. 3. The company introduced a new track index system to streamline its operations.
   该公司引入了一种新的跟踪索引系统以简化其运营。