A period or situation characterized by decline, disarray, and decay, often implying a state of neglect and confusion.
这座老旧的图书馆，因为年久失修，藏书散乱，如今已是一片齐梁世界，让人看了心生惋惜。
Due to years of neglect, the old library, with its scattered books, had become a scene of disarray and decay, which made people feel a sense of pity upon seeing it.
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