1
one line;one streak;one stripe;one ray (of light);one wisp (of smoke)
スプリンクラーが芝生の一条の水を噴出している。
The sprinkler is shooting out a stream of water onto the grass.
2
one item (in an itemized form);one clause;one passage (in a book)
3
one matter (affair, event, case, incident)
1
Ichijō