shā / yán / jīng / guò / cháng / qī / fēng / huà / hòu / biǎo / miàn / chū / xiàn / le / míng / xiǎn / de / wén / lǐ砂岩经过长期风化后,表面出现了明显的纹理。After prolonged weathering, the sandstone developed a distinct surface texture.