Environmentalists are people who advocate the preservation of the natural environment 环境主义者是倡导保护自然环境的人。
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Management of the non - built environment should be included as another planning objective since the preservation of the natural environment is essential to ensure the future living environment is sustainable 由于保育自然环境对保障未来生活环境的可持续发展异常重要，宜于规划目标内增加未开发环境的管理一项。
