🎞️Bosch: Legacy Season 1 Episode 06より

Goes without saying. This stays between us.
言うまでもないが。誰にも内緒だ。

*一連の顛末は二人だけの秘密にしておこうと持ち掛けて

between us
私たちの間だけ
ここだけの話
ここだけの秘密

色んな使い方
It’s just between us.
It stays between us.
This is just between you and me.
Keep this between you and me.
Stays between you and me.