穷而诚实的人是不该让人小看的。

A poor but honest man is not to be belittled.

youdao

我有点生气，好让人们知道，我是不容人家小看的。

I am a little piqued in order to let people see I am not to be despised.

youdao

乍一看，对方给出的条件好像很优厚，但任何时候都不要小看那些小号字印刷的附加条款。

At first sight, it may look like a generous offer, but always read the small print.

《牛津词典》

And I'll just say a word quickly, that don't underestimate the influence here of an ideology beneath this.

我要简单阐述一个单词,不要小看了这种现象下的,意识形态对此的影响

耶鲁公开课 - 美国内战与重建课程节选

This is not to belittle that simplicity of the idea; that's wonderful.

不要小看这种简单的想法,它还是非常棒的。

哈佛公开课 - 计算机科学课程节选