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水泥是由石灰石制成的.Cement is made from limestone.在白色石灰石和粉灰色石灰石之間是一層薄薄的黏土。Between the white limestone and the greyish pink limestone is a thin bed of clay.周圍一堆堆的石灰石,在彩虹一樣的斑斕色彩中閃閃發(fā)光.Round about , piles of lime - stone glistened in...

“石灰石”的英語可以翻譯為：limestone，[化] lime rock，[醫(yī)] chalky calculus ...