侄子

例句：

1. 1. My nephew is studying in a different city.
   我的侄子正在另一个城市学习。
2. 2. He has an elder brother and a younger sister, both of whom are his aunts.
   他有一个哥哥和一个妹妹，他们都是他的阿姨。
3. 3. His uncle is a successful businessman who often visits him during holidays.
   他的叔叔是一位成功的商人，在假期经常来看望他。