zhèxiē / fèitónglàntiě / suīrán / bù / zhíqián / dàn / huíshōu / hòu / kěyǐ / chóngxīn / lìyòng这些废铜烂铁虽然不值钱,但回收后可以重新利用。Although this scrap metal is not worth much, it can be reused after recycling.