中英释义：
双语例句
世纪，两个圣诞节习俗，即装饰圣诞树和向亲友赠送圣诞卡，变得流行起来。
In the 19th century, two Christmas customs became popular - decorating Christmas trees and sending Christmas cards to relatives and friends.
重点词汇
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圣诞节
Christmas; Christmas Day
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习俗
custom; way; practice; mores; folkways; convention; way of life; habitual practice; social norm; customary; traditional; conventional