雙語科技百科(工程建築) 第75期:長城
The Great Wall
Construction of the Great Wall began during the Spring and Autumn Period to the Warring States Period. Several vassal states built wall fortifications successively along the precipitous mountain ridges to ward off the plunder of nomadic people and the invasion of each other. In 221 B. C. when Qin Shihuang united China, he ordered to link the walls up. During the following dynasties, the Great Wall was destroyed continuously by natural disasters and human g the remaining broken pieces of walls, those constructed in the Ming Dynasty are the most well-preserved and splendid ones. The Great Wall stretches some 6,300km from Jiayuguan Pass in the west to the Yalujiang River in the east, traversing 11 provinces, municipalities and autonomous regions. Not only is it the most magnificent ancient military defense work, but one of the most remarkable ancient buildings in the world.
長城始建於春秋戰國時期。各諸侯國爲互相防禦和抵禦北方遊牧部落的侵擾，在地形險要之處相繼興築長城。公元前221年，秦始皇統一中國後，將從前的長城連接起來。在以後的幾個歷史時期，由於自然和人爲因素的毀壞，保存到今天的大都已是斷斷續續的遺蹟。而在這些遺蹟中保存最完整、最套固、最雄偉的是明代長城。長城綿亙中國的11個省、市、自治區，西起嘉峪關，東到鴨綠江，全長約12600華里。它不僅是古代最雄偉的軍事防禦工程，也是世界上最非凡最偉大的古老建築之一。
