environmental art环境艺术environmentaladj.环境的；有关环境的environmental historiography环境史Environmental Protective NGO环保NGOenvironmental economic value环境经济价值Environmental impact factors环境影响因子environmental-friend fiber绿色纤维environmental control system防污染装置,环境控制系统,防污染系统environmental protection tax环境保护税Environmental warning system环境风险预警体系Environmental Kunzites Curve环境库兹涅茨曲线environmental protected dyes环保型还原染料