"经验丰富"的英语表达可以是"experienced"或"well-versed".

来源：

"Experienced" 来自拉丁语"experientia"，意为"实际经验".

"Well-versed" 来自拉丁语"versatus"，意为"有经验的".

例句：

I'm looking for an experienced designer to help with the project.

我正在寻找一位有经验的设计师来帮忙完成这个项目。

She is well-versed in both English and Chinese.

她既精通英语又精通汉语。