map cleaning

例句：

1. 1. The map cleaning crew has been working tirelessly to restore the old map.
   地图清洁团队一直在努力不懈地恢复旧地图。
2. 2. After a long day of exploring, we decided to clean up our maps before heading home.
   在探索了一整天之后，我们决定在回家之前整理一下我们的地图。
3. 3. The map cleaning process is crucial for maintaining the accuracy of the navigation system.
   地图清洁过程对于保持导航系统的精确性至关重要。