Definition: Clothes or colors that are sober are plain and not bright. Level: C2
她为正式活动选择了一件朴素的灰色连衣裙。
She chose a ___sober gray dress for the formal event.
彼得穿了一套蓝色西装，系了一条朴素的领带去开会。
Peter wore a blue suit and a ___sober tie to the meeting.
办公室装饰采用素雅的色调，以保持专业的氛围。
The office decor features ___sober colors to maintain a professional atmosphere.
