求翻译：5，长城。长城始建于春秋战国时期，历 时达2000多年，总长度达5千万米以上。 我们今天所指的万里长城多指明代修建的 长城，它西起中国西部甘肃省的嘉峪关， 东到中国东北辽宁省的鸭绿江边，长635万 米。它象一条矫健的巨龙，越群山，经绝 壁，穿草原，跨沙漠，起伏在崇山峻岭之 巅，黄河彼岸和渤海之滨。是什么意思？

5, the Great Wall. Great Wall was built in the Spring and Autumn Period, which lasted up to 2,000 years, the total length of more than 50 million meters. Yalu River, Great Wall more than we are today referred to the Ming Dynasty built the Great Wall, west from Jiayuguan in Gansu Province in western