Robertson

例句：

1. 1.The Robertson family has lived in this town for generations.
   罗伯特森家族在这个镇上已经居住了几代人。
2. 2. He was a great friend of Robertson's.
   他是罗伯特森的好朋友。
3. 3.Robertson is a famous author who wrote many books about history.
   罗伯特森是一位著名的作家，他写了很多关于历史的书籍。