参考翻译
The Qin Dynasty was the first unitary,multi-national and power-centralized,feudal dynasty in Chinese history.Although lasting only for 15 years,it played an important role in Chinese history and exerted a great influence on the foltowing dynasties.To strengthen the unity of the nation and to perpetuate the Qin Dynasty,Emperor Qin Shi Huang carried out many reforms in politics,economy,military affairs and culture.In politics,he declared himself the emperor of the stale in possession of all major powers.In economy,he standardized weights and measures as well as money.In Addition,he standardized the written characters and the distance between two wheels.The miracle of the world,the Great Wall of China was also built under his order.