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1·I mean, it's easier to find an iron meteorite or a stony iron.

我的意思是，找到铁陨石或石质铁会更容易。

2·Stony iron meteorites are divided into two sub categories: olivine and iron meteorite.

铁陨石又分为两个子类：橄榄陨石与中铁陨石。

3·Stony iron meteorite is a kind of meteorite.

铁陨石是陨石的一种。