preservation

英 [prezə'veɪʃ(ə)n] 美[,prɛzɚ'veʃən]

• n. 保存，保留

1. the activity of protecting something from loss or danger

2. the condition of being (well or ill) preserved

3. a process that saves organic substances from decay

4. an occurrence of improvement by virtue of preventing loss or injury or other change