palimpsest

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Some of it is lost, as the DNA palimpsest has been erased and re-written.
由於DNA的“原手稿本”已經擦拭竝重寫，有些信息便遺失了。
One of the most spectacular feats in this field concerns the so-called Archimedes Palimpsest.
在此領域最爲歎爲觀止的成果就是所謂的“阿基米德複寫稿”。
Few autobiographical works, from the respective Confessions of St. Augustine (397 CE) and Rousseau (1769) to, say, Gore Vidal's Palimpsest (1995), feel as warmly open as Modern Nature.
自傳作品中除了分別由聖·奧古斯丁（公元397年）和盧梭（1769年）所寫的《懺悔錄》，戈爾·維達爾的《羊皮書》（1995年）之外，則很少有如《現代自然》這般袒露至誠者。

Each institution has been given five of the palimpsest's 170 pages.
ECONOMIST: The Archimedes palimpsest
By passing light from the palimpsest through a filter made up of liquid crystals, the researchers can adjust the wavelengths of the pictures that result by 10 billionths of a metre at a time.
ECONOMIST: The Archimedes palimpsest
The collector, however, has now made the palimpsest available for study, and it is being prodded and probed by scientists at Johns Hopkins University in Baltimore and at the Rochester Institute of Technology in New York state.
ECONOMIST: The Archimedes palimpsest: Eureka!

a very old text or document in which writing has been removed and covered or replaced by new writing

a manuscript on which two or more successive texts have been written, each one being erased to make room for the next
(of a text) written on a palimpsest