密室(みっしつ)で'behind closed doors'

知(し)らない人(ひと)と密室(みっしつ)で過(す)ごすのは嫌(いや)です。

I don't like spending time 'behind closed doors' with people I don't know. {'behind closed doors'}

密室(みっしつ)で時間(じかん)を過(す)ごすと気分(きぶん)が塞(ふさ)ぎ込(こ)みます。

Spending time behind closed doors makes me feel depressed. {'behind closed doors'}

地下(ちか)の密室(みっしつ)で人質(ひとじち)を拷問(ごうもん)している彼(かれ)らは悪魔(あくま)のようだ。

They are like devils, torturing hostages behind closed doors in the underground chamber. {'behind closed doors'}

空気(くうき)が悪(わる)い密室(みっしつ)でずっと篭(こも)っていると気持(きも)ちまで悪(わる)くなってきます。

When you're cooped up in a room with bad air quality for a long time, even your mood starts to deteriorate. {'behind closed doors'}

仲良(なかよ)くない人(ひと)と密室(みっしつ)で話(はな)し合(あ)っていたこととて、心臓(しんぞう)が止(と)まりそうです。

Discussing things behind closed doors with someone I don't get along with felt as if my heart was going to stop. {'behind closed doors'}