ronnel

例句：

1. 1. He is known as the "father of modern medicine" in his country.
   他在该国被誉为“现代医学之父”。
2. 2.Ronald Reagan was a famous American politician who served two terms as President of the United States.
   罗纳德·里根是一位著名的美国政治家，曾两度担任美国总统。
3. 3. Ronald Reagan is often referred to as the "father of the American peace movement."
   罗纳德·里根常被称为“美国和平运动之父”。