Learners can feel very discouraged if an exercise is too difficult.

如果练习太难，学习者就可能感到很没信心。

《牛津词典》

If you are talking about a subject you know well, as I've just advised, prepared, preparing the speech itself should not be too difficult.

如果你正在谈论一个你很熟悉的话题，就像我刚才建议的，做好准备；准备演讲本身应该不是太难。

youdao

If it is too difficult to write concurrent classes properly, then we are guaranteed that many concurrent classes will not work as expected, and that this is a flaw in the platform.

如果正确地编写并发的类太困难的话，那么我们可以说许多并发的类不能按预期工作，并且这是平台中的一个缺点。

youdao

But protecting plants and trees in the garden may not be too difficult if you follow a few suggestions.

VOA: special.2010.01.12

But you might have to,also, refer to a Psalm over here or to another passage over here. And it's too difficult if you're unraveling scrolls and everything.

但你也许还要查阅，诗篇或者另一段文字,而解卷展轴太麻烦了。

耶鲁公开课 - 新约课程节选

If you are like me, too difficult about getting places on time, you have to make an extra effort the way I do, and arrive on time.

如果你们像我一样，容易迟到，你们就要像我一样努把力，要准时上课。

麻省理工公开课 - 电影哲学课程节选

They are warned by businesses not to damage their international competitiveness, with threats to move abroad if regulations make life too difficult.

BBC: More

If your neighbor complains that it is too difficult to keep the yard tidy all the time, ask if they could just do so during showings or open houses.

WSJ: How to Handle Messy Neighbors

If that step proves too technically difficult for the person who made the discovery, a mathematician or statistician can be added as a collaborator.

WSJ: Great Scientists Don't Need Math