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千萬人都在用的超大詞匯詞典翻譯APP
Zaffre, a pre-scientific substance (see List of alchemical substances), is a deep blue pigment obtained by roasting cobalt ore, and is made of either an impure form of cobalt oxideClayArt or impure cobalt arseniate. During the Victorian Era, zaffre was used to prepare smalt and stain glass blue.
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