ブラックボックスだった
burakkubokkusudatta
1. Was a black box.
Noun
#538700
1. Was a black box.
1. If it were a black box.; When it is a black box.
1. juke-box
1. minivan; people-mover
1. of box; box's
1. in a box; with a box
1. It is a box.; Is a box.
1. Not a box; It's not a box.