外公的弟弟英语怎么说呢

外公的弟弟英文翻译为：paternal uncle's younger brother。
来源：
在英文中，我们通常使用“paternal”来指父亲，而“uncle”则是指叔叔。因此，“paternal uncle”就是指外公。“Younger brother”则是指弟弟。
下面是一些使用“paternal uncle's younger brother”的英文例句：
My paternal uncle's younger brother is a successful lawyer.
(我外公的弟弟是一名成功的律师。)
I haven't seen my paternal uncle's younger brother in years.
(我已经好几年没有见到我外公的弟弟了。)
My paternal uncle's younger brother always has interesting stories to tell.
(我外公的弟弟总是有有趣的故事讲。)
希望这些信息对您有帮助。