修旧利废
- na.repair the old and utilize the waste
- 网络repair and utilize old or discarded things; repair old things and make use of waste materials; Do fix old articles and reuse the waste ones

修旧利废
1.repair the old and utilize the waste; repair and recycling; repair and utilize old or discarded things; repairing old equipment and reclaiming scraps; repair old equipment and make use of waste material