把这段文字进行翻译成英文。
「中国长城是中华民族的瑰宝之一，它始建于公元前7世纪春秋战国时期，距今已有两千多年的历史。长城东起山海关，西至嘉峪关，全长8851.8公里。」
"The Great Wall of China is one of the treasures of the Chinese nation. It was first built in the Spring and Autumn period of the 7th century BC, and has a history of more than two thousand years. The Great Wall extends from Shanhaiguan in the east to Jiayuguan in the west, with a total length of 8,851.8 kilometers."