平安夜，也叫圣诞前夜，是西方传统节日之一。在这一天，人们通常会和家人、朋友一起庆祝，享用美食，交换礼物，还有唱圣诞歌等活动。如果要用英语描述这个节日，可以说：

Christmas Eve, also known as the night before Christmas, is a traditional holiday in the West. On this day, people usually celebrate with family and friends, enjoy delicious food, exchange gifts, and sing Christmas carols and other activities.