为了使铁跟杂质分离,铁矿石必须经过冶炼。
For separating iron from the impurities the iron ore must be melted.
如果你跟海关或航空公司的关系很铁,你想带什么进来都可以。
Once you have good relationships with customs and airline companies, you can ship whatever products you like.
联邦铁路局相信,美国的高铁运行所用的铁轨,可以提供跟其他任何地方的高铁一样安全、甚至更加安全的服务。
FRA believes that railroads conducting HSR operations in the United States can provide service as safe as, or safer than, any HSR operation being conducted elsewhere.
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