Conservation methods:a cool dark dry preservation.

阴凉避光干燥处保存。

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AIM: to evaluate the clinical effects of therapeutic keratoplasty using donor corneas of dry preservation for 554 cases of severe infective corneal ulcer.

目的：评价应用干燥保存角膜片对554例严重感染性角膜溃疡行治疗性角膜移植手术的效果。

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A second, more likely, explanation is that the extremely dry climate of ancient Egypt was largely responsible, given that dryness promotes the preservation of organic remains generally.

第二种，更有可能的解释是，古埃及极端干燥的气候是主要原因，因为干燥促进了有机遗骸的保存。

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Unlike the ancient Egyptian mummies, which went through a complicated preservation process to dry out their flesh, most of these corpses were preserved simply by putting them somewhere where moisture was scant.

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The archaeologists put the shoe's remarkable preservation down to the stable, cool and dry conditions in the cave and the fact that the floor of the cave was covered by a thick layer of sheep dung.

BBC: 'Oldest leather shoe' discovered