Mineralogist Jeffrey Post of the Smithsonian Institution in Washington, D.C., agrees.

华盛顿特区史密森学会的矿物学家杰弗里·波斯特表示同意。

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Mineralogist Jeffrey Post of the Smithsonian Institution in Washington, D. C., agrees.

华盛顿特区史密森学会的矿物学家杰弗里·波斯特表示同意。

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The report included letters and attachments by other expedition members, including naturalist and mineralogist George Bird Grinnell.

这个报告包括了其他探险队成员的信件和附件，内中还包括自然学家和矿物学家乔治·伯尔德•格林·尼尔。

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A mineralogist at the California Institute of Technology, Rossman says serpentine is only dangerous if you grind it up and inhale the particles.

VOA: standard.2010.07.26