碳酸钙 tànsuāngài calcium carbonate Origin Definitions Defs Strokes Stroke Words Sentences Sents 1 sentence 碳酸钙是构成大理石的主要成分。 tànsuān gài shì gòuchéng dàlǐshí de zhǔyào chéngfèn. Calcium carbonate is the main component of marble. Source: Dong Chinese Dictionary