1 (used about a person) very serious; not happy or smiling （指人）非常严肃的，没有笑容的: Her solemn face told them that the news was bad. 他们一见她神情严肃就知道那是坏消息。

2 sincere; done or said in a formal way 诚挚的；庄重的: to make a solemn promise 诚挚地许诺 ➔solemnity /səˈlemnəti ||; səˈlɛmnətɪ/ noun [U] ➔solemnly adv ‘I have something very important to tell you,’ she began solemnly. 她严肃地开口说：“我有很重要的事要告诉你。”