noun 下载 🔗分享 茜素， 茜素红. A red substance, 1,2-dihydroxyanthraquinone, extracted from madder root and used as a dye. Examples : "The artist used alizarin to give the fabric a rich, crimson red color. " 艺术家使用了茜素红，使这块布料呈现出一种浓郁的深红色。 substance material chemistry color compound 与AI对话词汇游戏阅读练习
