these four wallsspokenPRIVATE/PERSONAL the room that you are in, especially considered as a private place 〔某人所在的〕房间〔尤被视为私人的地方〕 I don’t want anything repeated outside these four walls. 我希望这些话出了这个屋子就不要再说了。
these four walls• What purpose did she serve sitting looking at these four walls?• I can not be said to have a life outside these four walls.• I don't want anything that I have said repeated outside these four walls.
→ these four walls at wall1(6)