Public City Crisis is a direct threaten to public safety.And public crisis is often amplified in scope and degree due to its effect of amplifying and chaining.

 
  • 城市公共危机是城市公共安全的直接威胁,由于城市公共危机具有放大效应和连锁效应,往往使公共危机的危害范围和危害程度加大。
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