conservation
n. 保护,保存;节约,防止浪费;守恒定律
例句
This proposal will incense conservation campaigners.
这项提议将激怒自然保护的倡导者。
《柯林斯英汉双解大词典》
The benefits of conservation are both financial and aesthetic.
保护自然环境在经济上和美化环境上都有好处。
《牛津词典》
Scientific research and conservation are intimately connected.
科学研究与环境保护联系密切。