double twin

例句：

1. 1. They are the proud parents of two beautiful double twins.
   他们是两个美丽双胞胎的父母。
2. 2. The double twins were born with a rare genetic disorder.
   这对双胞胎出生时患有一种罕见的遗传病。
3. 3. Double twins often have unique personalities and interests.
   双生子通常具有独特的个性和兴趣。