无人耕作的英文：
left uncultivated

You are really uncultivated.
你真的很没教养。

He is an uncultivated person.
他是一个没教养的人。

The world has vast uncultivated land areas.
世界上还有广阔的未开垦的陆地。

The flower grows in a natural, uncultivated state.
这种花在天然的未开垦的状态下生长。

Not a single hectare of land is left uncultivated in our village.
我们村没有一亩荒废的土地。