1
- a volley of gunfire directed along a line from end to end纵（向）射（击）。
2
- a suite of rooms with doorways in line with each other房门成行排列的一套房间。
词源
early 18th cent. (denoting the position of a military post commanding the length of a line)： from French, from enfiler 'thread on a string, pierce from end to end', from en- 'in, on' + fil 'thread'.