サブジェクトラインだったら
sabujekutoraindattara
1. If the subject line; When the subject line
Noun
1. If the subject line; When the subject line
1. if it's the case
1. online
2. on the line (of a ball; in tennis, volleyball, etc.)
1. starting line; starting point
1. line
1. hot line; hotline
1. border line
1. goal line
1. not be found