solemnness
n. 严肃；认真
例句
- He gave his solemn promise to do better. 他庄重地保证把事情办好。
- He looked at her with a solemn expression. 他表情严肃地望着她。
- At times solemn speeches sober down a dinner. 有时庄重的发言会使宴会变得严肃起来。
- The President took the solemn oath of office. 总统正式宣誓就职。
- He made a solemn promise to do better. 他郑重保证要做得更好。
- He was very solemn and refrained from talking. 他很严肃，沉默寡言。