decolourant

例句：

1. 1. The decolourant was used toremove the stains from the fabric.
   使用脱色剂来去除布料上的污渍。
2. 2. Thebleaching agent was effective in removing thestains from the fabric.
   漂白剂在去除布料上的污渍方面非常有效。
3. 3. The decolourant was used to remove the stains from the fabric and restore its originalcolor.
   使用脱色剂来去除布料上的污渍并恢复其原始颜色。