He worked hard to improve the sanitary conditions of the slums.

  • 他努力改进贫民窟的卫生条件.

  • 词典精选例句 2025-01-19 10:40:11

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