站在土堆上的人英语可以用 "a person standing on a mound of dirt" 来表示。这个短语没有明确的来源，可以理解为是根据其所描述的意思来翻译而成。

下面是一些英文例句及其中文翻译：

I saw a person standing on a mound of dirt when I was walking through the park.
我在公园散步时看到有个人站在土堆上。

The person standing on a mound of dirt was trying to plant a tree.
站在土堆上的人正在尝试种树。

I couldn't bepeve my eyes when I saw a person standing on a mound of dirt with a shovel in their hand.
我看到站在土堆上的人手里拿着铲子时不敢相信我的眼睛。

The person standing on a mound of dirt looked pke they were having a lot of fun.
站在土堆上的人看起来很开心。