子爵

例句：

1. 1. The duke's son is a young count.
   公爵的儿子是一个年轻的伯爵。
2. 2. He was a baron in the old days.
   他过去是个男爵。
3. 3. The title of baron has been passed down through generations.
   男爵的头衔已经传了好几代了。