By analyzing the present state of waste and old materials management in molybdenum mines, new management approaches were proposed.

通过对钼矿山废旧物资管理现状的分析，提出了新的管理思路。

youdao

Waste and old materials as renewable resources has been ignored for a long time, and its theoretical research and practice is also treated coldly.

作为再生商品资源的废旧物资及其广阔的市场，长期以来一直被严肃而谨慎的理论界所不耻，其理论研究和实践备受冷落。

youdao

As long as we actively use our brains, we can find appropriate methods to dispose of our old and waste materials skillfully and turn them into pleasant surprises!

只要我们积极动脑，方法恰当，用心去制作，很多废旧材料都能在我们手中变换出惊喜！

youdao

Mr. ROB ROUTS (Executive, Royal Dutch Shell): Waste materials could be straw, they could be wood and in some cases, for instance, old railroad ties, trees, what have you.

NPR: Would More Biofuel Use Threaten Food Supplies?