chángqī / de / fēngyǔ / bōshí / shǐ / yánbì / biǎomiàn / chūxiàn / le / xǔduō / āohén长期的风雨剥蚀使岩壁表面出现了许多凹痕。Long-term erosion by wind and rain has left many indentations on the surface of the rock wall.