on line

形容词 on line:

1. on a regular route of a railroad or bus or airline system
   同义词：on-line
2. connected to a computer network or accessible by computer
   同义词：on-line
3. being in progress now
   同义词：on-line

1. The sale office is on line to the warehouse.
   营业部与仓库的计算机联网。