大贤者
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战斗力 鹅
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注册时间 2004-5-23
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引用第69楼DOACAON于2013-05-20 17:35发表的 :

上图是位于叙利亚的萨拉丁堡壕沟,参见http://en.wikipedia.org/wiki/Citadel_of_Salah_Ed-Din
壕沟由10世纪的拜占庭人在岩山中人工挖掘,位于萨拉丁堡东部,平均深度28米,宽14~20米,长156米。照片中央的大石柱是挖掘时刻意留下的,用途是支撑城门前的桥梁。
One of the most magnificent features of the fortress is the 28 m deep ditch, which was cut into living rock. The creation of the ditch has been attributed to the Byzantines. This ditch, which runs 156 meters along the east side, is 14 to 20 meters wide and has a lonely 28 m high needle to support the drawbridge. 
这是在石头里挖的,跟泥土不一样。 |
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