Irons, stony-irons, chondrite, and achondrites are by no means equally abundant among observed meteorites.
（真题）铁矿、陨铁石、球粒状陨石及无球粒陨石在可观测到的陨石中绝不多见。
They are generally classified into three broad categories—stones, stony irons and irons.
它们通常被分为三大类——石头、陨铁石和铁。
They are generally classified into three broad categories—stones, stony irons and irons.
它们通常被分为三大类——石头、陨铁石和铁。
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