私人电话线所连接的系统无法拨打或接听国际电话；国际电话线路只有在受到限制的场合下才会接通。

Private telephone lines operated on a system that precluded making or receiving international calls; international phone lines were available only under restricted circumstances.

youdao

私人电话线所连接的系统无法拨打或接听国际电话；国际电话线路只有在受到限制的场合下才会接通。

Private telephone lines operated on a system that precluded making or receiving international calls; international phone lines were available only under restricted circumstances.

youdao