Read Edit View history 灰岩 huīyán limestone Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 灰岩 huīyán limestone noun · limestone (abbreviation for 石灰岩 shíhuīyán) 这片山区的地层主要由灰岩组成。 Edit Delete References Add reference classifier 灰岩/灰岩 → 块/塊 Edit Delete