求翻译：我国现存最大型的、保存完整的是明代的西安城墙，建于明洪武三年至洪武十一年（1370—1378年）。城墙用黄土分层夯筑，城墙周长合11．9千米，高12米，厚16．5米，城内面积近12平方千米，四面正中辟门，每座门外设箭楼，以利射击，内建城楼，两楼之间建瓮城。城墙里面建有马道六处，外面建有敌台，城垣外围护城河宽20余米，深10余米。是什么意思？

China's largest existing, preserved Ming Dynasty Xi'an City Wall, the Ming Dynasty Hongwu Hongwu three to eleven years (1370-1378 years). Walls with mud layered Ben Zhu, perimeter walls combined 11.9 km, 12 meters high, 16.5 m thick, the city area of ​​nearly 12 square kilometers, surrounded by the

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Our country extant largest-scale, the preserved integrity is Ming Dynasty's Xi'an city wall, constructs in the bright Hongwu three years to the Hongwu 11 years (1370-1378 year).The city wall hang builds with the loess lamination, the city wall week recovers from injuries 11.9 kilometers, the height

Of our existing largest and well preserved Ming Xian city wall, built in the Ming dynasty Hongwu 11 years, three to (1370-1378). City wall with loess tiered consolidation building, perimeter walls-11. 9-kilometer, 12 meters high, thick 16. 5 meters, in the city of about 12 square kilometres, Midway,

China's largest existing, preserved Ming Dynasty Xi'an City Wall, the Ming Dynasty Hongwu Hongwu three to eleven years (1370-1378 years). Walls with mud layered Ben Zhu, perimeter walls combined 11.9 km, 12 meters high, 16.5 m thick, the city area of ​​nearly 12 square kilometers, surrounded by the