A survey was conducted to reveal pollution of fluoride , arsenic mercury on farmland around cement factories.

  • 水泥厂在生产过程中产生的大气污染对周边环境影响较大.

  • 网络文摘精选 2025-01-17 06:54:07

    • 相关例句
    精确
    • 模糊
    • 词首
    • 词尾
    • 词义
    • 例句