外线: 1.[军事] exterior lines 短语和例子外线作战 fight on exterior lines; exterior-line operations2.(对外通话的线路) outside (telephone) connections 短语和例子叫(电话)接线员接外线。 ask the switchboard operator for an outside l
1 . the " telephone " we provided was not an ordinary telephone ; it was a cordless phone that routed its calls through an outside line 电话是指由无线电话转接外线电话,而非一般的电话,因当时南投电信局大部分的线路均断线。