Examples
十二月二十五号圣诞节。
Christmas is December 25th.
Christmas is on December twenty-fifth.
Christmas Day is December 25th.
Source: Tatoeba
十二月是一年的最后一个月。
December is the last month of the year.
Source: Tatoeba
她在一个寒冷的十二月晚上死了。
She died on a cold night in December.
Source: Tatoeba
她在十二月的一个寒夜里去世了。
She died on a cold night in December.
Source: Tatoeba