她为面试选择了一条朴素、灰色的连衣裙。

She chose a ___sober, grey dress for the interview.

彼得穿了一套蓝色西装，打着一条朴素的领带。

Peter wore a blue suit and a ___sober tie.

房间用朴素的颜色装饰，以营造平静的氛围。

The room was decorated in ___sober colours to create a calm atmosphere.