preservation
/ˌprezəˈveɪʃən/noun
mass noun
1- the action of preserving something保护, 保养; 维护, 保全：
the preservation of the city's green spaces
城市绿地的保养
food preservation.
食物保存。
1.1
- the state of being preserved, especially to a specified degree保存, 保留; 留存：
in a fine state of preservation.
被完好保存着。
词源
late Middle English: via Old French from medieval Latin praeservatio（n-）, from late Latin praeservare 'to keep' （see PRESERVE）.