环境改善学

例句：

1. 1. The environmental improvement project aims to reduce pollution in the city.
   这个环境改善项目旨在减少城市污染。
2. 2. Environmental science is a field that studies how nature affects our lives.
   环境科学是一门研究自然如何影响我们生活的学科。
3. 3. The government has launched a campaign to promote environmental protection.
   政府已经启动了一个促进环境保护的运动。