用英文翻译：看不起穷人是错误的

Look down on the poor is wrong.
或者 It's wrong to look down on the poor.
the 加形容词表示某一类人，比用poor people好。

看不起穷人是错误的: Look down on poor people is wrong.

Despise the poor is wrong 鄙视穷人是错误的