The doormat is made from recycled tires.门垫是用旧轮胎再加工做成的。The rationale of reprocessing spent nuclear fuel is inevitably being questioned.对核废料进行再加工的理由不可避免地受到了质疑。Luckily, iron can be reworked and mistakes don't have to be thrown away.所幸的是,铁可以再加工,次品、废品不必被扔掉。