1·Further, natural dyes tended to be muddy in hue and fade quickly.
此外，天然染料往往是浑浊的颜色而且它们很快褪色。
2·Here was the raw material of houses and furniture, ships and potash, dyes and naval stores.
这是用于建造房屋、家具、船只、钾碱、染料和海军用品的原材料。
3·The indigo plant was highly valued until the discovery of chemical dyes in the 19th century.
在19世纪发现化学染料之前，靛蓝一直被高度重视。
4·Petrochemicals such as dyes, fertilizer, and plastic are also manufactured from the petroleum.
石油还可用来制造石油化工产品，例如染料、化肥和塑料制品。
5·Historically, textile dyes were made from such natural sources as plants and animal excretions.
在历史上，纺织染料是由植物和动物排泄物等天然资源制成的。