double-tier partition

例句：

1. 1.The company has implemented a double-tier partition system to improve efficiency.
   该公司已经实施了一个双层分区系统来提高效率。
2. 2. The new software features a double-tier partition for better performance.
   这款新软件采用了双层分区设计，以提升性能。
3. 3. The data is divided into two tiers, with the lower tier containing less critical information.
   数据被分为两个层级，较低层级包含较少的关键信息。