After the localization of the region of the road, we need to update the background because of the transformations of background caused by the changes of environment such as light.

在完成了路面区域的定位后，因为光线等环境变化引起的背景变化会影响运动检测的结果，所以需要对背景进行更新。

youdao

The President was referring to the transformations in the region, to this process that has -- only began less than two years ago, as we saw in Tunisia, and continues to this day with remarkable transformations occurring in countries around the region.

WHITEHOUSE: Press Briefing

He will discuss broadly the American role in the transformations taking place in the region.

WHITEHOUSE: Press Briefing

And so there was a real effort discussed and agreed that would help to coordinate and consolidate both the humanitarian response, particularly with respect to Libya, and the political efforts to help support the democratic transformations that we hope are underway in various parts of the region.

WHITEHOUSE: Press Briefing