发布于:2025-07-06 05:46浏览量:122文/优校网
1.保存;保管;储藏;保护,防腐
2.保持;维护
1.the process of working to protect something valuable so that it is not damaged or destroyed; involved in preservation
2.the degree to which something has not been changed by the effects of time or weather
3.the process of trying to make a situation or state continue without changing
4.the addition of a chemical substance to food or wood in order to prevent it from decaying
1.the process of working to protect something valuable so that it is not damaged or destroyed; involved in preservation
2.the degree to which something has not been changed by the effects of time or weather
3.the process of trying to make a situation or state continue without changing
4.the addition of a chemical substance to food or wood in order to prevent it from decaying