定色剂

例句：

1. 1. The artist uses a special dye to create the vibrant colors in his paintings.
   这位艺术家使用一种特殊的染料来创作他画作中的鲜艳色彩。
2. 2. The chemical used in this process is known as a fixative, which helps the color stay onthe fabric.
   这种工艺中使用的化学物质被称为定色剂，它帮助颜色留在织物上。
3. 3. The dyestuffs used in printing are often referred to as fixatives, as they help the colors stand up against washing.
   在印刷中使用的染料通常被称为定色剂，因为它们帮助颜色在洗涤中保持鲜明。