这样的违法行为不可等闲视之。

Such an illegal act should not be treated lightly.

《新英汉大辞典》

这个问题值得我们关注，决不可等闲视之。

This problem deserves our full attention. It's not to be shrugged off.

youdao

但是确实存在着这种典型，而且为数相当地多，为害相当地大，不可等闲视之的。

However, people of this type do exist; what is more, there are quite a few of them and they cause a great deal of harm. This matter should not be treated lightly.

youdao

Well we could begin with George Washington Alright, for your sake, we toss in John Kennedy ... who cut taxes. -Because... the Kennedy tax cuts and the Reagan tax cuts ... were both major tax cuts. -Did you hear me ask him ? for a one-word answer? Did you hear me?

那干脆从乔治·华盛顿谈起得了，真是的,好吧，看在你的面子上，姑且把他算上吧,他好歹也减税了，-因为。,肯尼迪的减税和里根的,都不可等闲视之，-我不是让他,只回答一个字吗？他怎么说这么多？

斯坦福公开课 - 经济学课程节选