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Gemstones

Industry: Jewelry

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Gemstones

紫水晶

Jewelry; Gemstones

紫水晶是知名石英家族的成員之一。

赤鐵礦

Jewelry; Gemstones

赤鐵礦是油氧化，幾個鐵氧化物之一的礦物形式。

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exmagro

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Financial Derivatives (Options and Futures)

Category: Business 3

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pengqingfang

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水电费的快速分解的咖啡机

Category: Autos 2

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