Someone or something that is serene is calm and quiet.
例句
She looked as calm and serene as she always did...她看上去和以往一样平静安详。He didn't speak much, he just smiled with that serene smile of his.他话不多,只是脸上露出他招牌式的淡定的微笑。
英汉词典释义
n.
安详;宁静
Her face had an expression of absolute serenity.她脸上带着极为平静的表情。Her face, though sad, still evoked a feeling of serenity.她的脸色虽然悲伤,但仍使人感觉安详。She escaped to the comparative serenity of the kitchen.她逃到相对安静的厨房里。She has a Madonna-like serenity.她有圣母画像一样的平和。