バックマージンじゃないです
bakkumājinjanaidesu
1. It's not back margin.
Noun
#1559312
1. It's not back margin.
1. not
1. then; well
1. within ...; inside ...
1. vacuum bottle; thermos
2. jar
1. a little less than; a little under
2. weakness; the weak
3. -lower (seismic intensity)
1. patient