The environment has been getting worse and worse for many years.We have been upgrading our living standard,meanwhile the envirinment has been polluted.Smoke from factory chimneys pollutes the air.是什么意思_The environment has been getting worse and worse for many years.We have been upgrading our living standard,meanwhile the envirinment has been polluted.Smoke from factory chimneys pollutes the air.在线翻译_英语_读音_用法_例句