Purgatory is where souls are held in a state of suspension 炼狱是安置灵魂的悬浮世界
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This paper introduces the histories and present states of suspension bridges all over the world and formulates the structure characteristics and basic calculation theories in detail 本文介绍了世界各国悬索桥的历史及现状，对悬索桥的构造细节、结构形式以及计算理论作了详细的阐述。
