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Textile dyestuff refers to substances used to impart color to textiles, such as fabrics, yarns, and fibers. These substances can be derived from natural sources, like plants, minerals, and insects, or they can be synthetic, created through chemical processes. 染料是指用來賦予織物（如布料、紗線和纖維）顏色的物質。這些物質可以來自天然來源，如植物、礦物和昆蟲，也可以通過化學合成。