例句：
1、They are going to play "Twelfth Night" next week.
下周，他们将演出“第十二夜”。
2、At the twelfth stroke, we welcomed in the New Year.
时钟正在敲十二点时，我们迎来了新年。
3、Ten days, from the third to the twelfth inclusive
十天，从三日到十二日，首尾两天也包括在内
4、Every twelfth baby is born weighing too little.
每十二个中有一个婴儿出生体重太轻。