Work is under way to develop better ways of preserving such crops.
研发保存此类作物方法的工作正在开展中。
2
Dirpersist saves and restores your directory stack across shell invocations, thus preserving important state so that you can resume work where you left off.
For the past 18 years, Jones and others working with Ibiblio have been digitally preserving collections as well as "vernacular work," which are freely accessible works in the public domain.