在土里挖土豆可以用英文说成 "digging potatoes in the soil"。这个短语的来源来自于土里挖土豆的实际活动，即通过在土壤中挖掘来收割土豆。
例句：
I love digging potatoes in the soil. 我喜欢在土里挖土豆。
She spent the afternoon digging potatoes in the soil. 她整个下午都在土里挖土豆。
He is known for his expertise in digging potatoes in the soil. 他因擅长在土里挖土豆而闻名。