网友回答：
we need a cleaner world. we should now be concerned for environment by creating a better future for our next generation. it also has a great impact on our future. 环保(environmental matter) the environmental matter is an important issue that directly a
温馨提醒：随时光变迁，文中所陈述观点；准确性、难免有所变动，因此文中观点仅供参考。
