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诗词在线APP
conservation
英 [kɒnsə'veɪʃ(ə)n]
美[,kɑnsɚ'veʃən]
- n. 保存，保持；保护
英英释意
- 1. an occurrence of improvement by virtue of preventing loss or injury or other change
- 2. the preservation and careful management of the environment and of natural resources
- 3. (physics) the maintenance of a certain quantities unchanged during chemical reactions or physical transformations