A mixture of lime or gypsum,sand,and water,sometimes with fiber added,that hardens to a smooth solid and is used for coating walls and ceilings.是什么意思_A mixture of lime or gypsum,sand,and water,sometimes with fiber added,that hardens to a smooth solid and is used for coating walls and ceilings.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句