以下是《山市》的原文及其翻译：

原文：

奂山山市，邑八景之一也，然数年恒不一见。孙公子禹年与同人饮楼上，忽见山头有孤塔耸起，高插青冥，相顾惊疑，念近中无此禅院。无何，见宫殿数十所，碧瓦飞甍，始悟为山市。未几，高垣睥睨，连亘六七里，居然城郭矣。中有楼若者，堂若者，坊若者，历历在目，以亿万计。忽大风起，尘气莽莽然，城市依稀而已。既而风定天清，一切乌有，惟危楼一座，直接霄汉。楼五架，窗扉皆洞开；一行有五点明处，楼外天也。层层指数，楼愈高，则明渐少。数至八层，裁如星点。又其上，则黯然缥缈，不可计其层次矣。而楼上人往来屑屑，或凭或立，不一状。逾时，楼渐低，可见其顶；又渐如常楼；又渐如高舍；倏忽如拳如豆，遂不可见。

翻译：

Huan Mountain is one of the eight scenic spots in the county, but it rarely appears for years. One day, Sun Ziyun and his friends were drinking on the upstairs when they suddenly saw a solitary pagoda rising from the mountain peak, towering into the blue sky. They looked at each other in astonishment, thinking there was no such temple nearby. Soon after, they saw dozens of palaces with green tiles and flying eaves, realizing that this was the phenomenon of "Shan Shi" (mountain market). Before long, high walls appeared, stretching six or seven miles, forming a city. There were buildings like towers, halls, and streets clearly visible, countless in number. Suddenly, a strong wind blew up, filling the air with dust, making the city faintly visible. After the wind stopped and the sky cleared, everything disappeared except for a tall building standing alone, reaching the clouds. The building had five stories, with all windows wide open; there were five bright spots on the line of sight, which were the outer sky. Counting the layers, the higher the building, the fewer the bright spots became. When counting to the eighth floor, they were as small as stars. Above that, it became dark and indistinct, impossible to count the layers. People could be seen moving busily on the top, either leaning or standing, in various postures. Over time, the building gradually lowered, showing its top; then it became like a regular building; then like a tall house; suddenly like a fist or bean, and finally disappeared.

以上是对《山市》的原文和翻译，希望能帮助您更好地理解这一经典的文学作品。