regrading

例句：

1. 1. The old road was regraded to improve safety.
   为了提高安全性，这条老路被重新铺设了。
2. 2. The city council decided to regrade the streets for better traffic flow.
   市议会决定重新整修街道以改善交通流。
3. 3. The construction crew is currently regrading the area for a new parking lot.
   施工队目前正在该地区重新整修，以便建设一个新的停车场。