conservation

/ˌkɑnsərˈveɪʃən/

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

Chinese meaning: 保护；保存

Wildlife conservation efforts have helped increase the population of endangered species.

野生动物保护工作帮助增加了濒危物种的数量。

Energy conservation is essential for reducing our carbon footprint.

节约能源对于减少碳足迹至关重要。