最具有经济价值的铁矿包括磁铁矿和赤铁矿.Iron ores of greatest economic interest contain magnetite and hematite.这是因为氧化磁铁矿蜕变.This is because the oxidation breaks down magnetite.某些贱金属以及金常常与磁铁矿和磁黄铁矿这类磁性矿物一起被发现.Base metals and gold are often fou...
Andre Agassi accepted a wild card to play in the Stockholm Open.安德烈·阿加西持外卡参加了斯德哥尔摩公开赛。He partnered Andre Agassi to victory.他和安德烈·阿加西搭档取得胜利。Agassi hit a backhand.阿加西反手一击。...