a state of siege的用法和样例：
- At last great areas of Europe were in a state of siege and subject to nightly raids.
- Jacksonville, where we were marooned for about six weeks, was practically in a state of siege.
- The house has fallen into a state of neglect.
- He was in a state of great agitation.
- The garden was in a state of total neglect.
- A state of ambiguity or obscurity.