celebrate
celebrate(庆祝/颂扬,积极情感:celebrate a success = 庆祝成功;celebrate diversity = 颂扬多样性)
commemorate
commemorate(纪念,庄重场合:commemorate a historical event = 纪念历史事件;commemorate victims = 纪念受害者;不含庆祝喜悦,更偏肃穆)
The school held a ceremony to celebrate the achievements of its graduating students and their remarkable academic journey.
学校举行了典礼,庆祝毕业生们的成就和他们卓越的学业历程。
Every year on 11 November, countries across Europe gather to commemorate those who lost their lives in the two World Wars.
每年11月11日,欧洲各地国家聚集在一起,纪念在两次世界大战中牺牲的人们。