日期：
来源：雅诚德英语网
Private telephone lines operated on a system that precluded making or receiving international calls;
私人电话线所连接的系统无法拨打或接听国际电话；
Private telephone lines operated on a system that precluded making or receiving international calls;
私人电话线所连接的系统无法拨打或接听国际电话；