ブラックボックスだったら
burakkubokkusudattara
1. If it were a black box.; When it is a black box.
Noun
#58160
1. If it were a black box.; When it is a black box.
1. if it's the case
1. juke-box
1. minivan; people-mover
1. not be found
1. If it comes out; When it comes out
1. If/when topped; If/when crowned