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终身售后
矿物黄铁矿或黄铁矿，又称傻瓜金，是一种化学式为FeS2的硫化铁。黄铁矿被认为是最常见的硫化物矿物。硫铁矿的金属光泽和浅黄铜黄色的色调使其与黄金在表面上具有相似之处，因此是傻瓜黄金的昵称。
We must explain to you how all seds this mistakens idea off denouncing pleasures and praising pain was born and I will give you a completed accounts of the system and expound.
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