reusable file

例句：

1. 1. We should try to use eco-friendly products to reduce waste and save resources.
   我们应该尝试使用环保产品，以减少浪费并节省资源。
2. 2. The company has developed a system that allows us to reuse old materials for new projects.
   该公司开发了一种系统，允许我们用旧材料为新项目重新利用。
3. 3. Reusing plastic bags can help reduce the amount of plastic waste in our environment.
   重复使用塑料袋可以帮助减少我们环境中的塑料废物。