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单词 roestone
释义 ˈroestone
[f. roe1.]
= oolite.
1804R. Jameson Syst. Min. I. 480 Roestone... Its colour is hair brown and chestnut brown.1839Ure Dict. Arts 772 Oolite or roe-stone.—It consists of spherical grains of various size, from a millet seed, to a pea, or even an egg.1876Page Adv. Text-bk. Geol. xvii. 332 The true oolites or roestones seem to be more of chemical than of mechanical origin.
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