請將下面這段話翻譯成英文：

　　吐蕃

　　吐蕃是7-9世紀時古代藏族建立的政權，是一個位于青藏高原的古代王國，延續(xù)了兩百多年。吐蕃社會生產(chǎn)以農(nóng)牧業(yè)為主，農(nóng)作物有青稞、小麥、蕎麥等;牲畜有牦牛、馬、駝、羊等;手工業(yè)有燒炭、冶鐵、制膠、毛織等。吐蕃時期的碑銘、木簡、文書、經(jīng)卷等尚有大量保存至今，是研究吐蕃社會和歷史的寶貴資料。

　　參考譯文

　　Tubo

　　Tubo was a regime established by ancient Tibetans between the 7th and 9th century. This ancient kingdom is located on the Qinghai-Tibet Plateau, and was the first regime established in Tibetan history. Following the collapse of the Tubo Dynasty, the Qinghai-Tibet Plateau and local people were renamed "Tubo" or "Xibo" in historical Han records of the Song, Yuan, and early Ming Dynasties.

　　相關推薦：2017年大學英語六級翻譯試題庫匯總（430篇）