palimpsest

The city is a palimpsest of architectural styles, each layer reflecting a different era of its history.这座城市的建筑风格层层叠加，每一层都反映了其历史的不同时期。

The scholar examined the palimpsest to recover texts that had been erased by later scribes.这位学者检查了羊皮重写本，以恢复那些被后来的抄写员擦除的文本。