trunk call

名词 trunk call:

1. a telephone call made outside the local calling area
   同义词：long distance, long-distance call

1. The lines were jammed up with trunk calls.
   电话线路全给长途通话占了。
2. Operator, can I have a trunk call to bedford645931, extension214, please?
   话务员，我想打个长途到Bedford645931号214分机。