• This Recommendation gives an overview of methods and general principles to be followed in organizing an International Telephone Directory Assistance Service.

    建议组织国际电话业务遵循方法一般原则提出一个总的看法

    youdao

  • This Recommendation gives an overview of methods and general principles to be followed in organizing an International Telephone Directory Assistance Service.

    建议组织国际电话业务遵循方法一般原则提出一个总的看法

    youdao

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