These problems are quite complex and it is not easy to achieve harmony between the difference groups.

他们的问题相当复杂，在各语言间取得协调，也非易事。

youdao

Problems at school, eg. bullying, teasing, finding schoolwork too hard or too easy, problems with teacher(s), not having any friends.

学校里存在的问题。比如，遭受欺凌或者取笑，家庭作业太难或者太容易，与老师关系出现问题，缺乏朋友。

youdao

Solutions to these problems are not easy to find.

要找到解决这些问题的办法并非易事。

youdao

They did not expect an easy life. And as time passed, they found solutions to most of the problems of farming on the Great Plains.

VOA: special.2010.04.15

That's an important observation, and as we get to the part of the course we talk about computational complexity, you'll see that what we really care about is not how efficient the program is on easy problems but how efficient it is on hard problems.

我们已经学习了这门课程的一部分了，我们要开始认识到,计算的复杂度这个概念，你会学习到我们在乎的并不是,算法在简单问题上的工作效率,而是解决复杂问题的效率。

麻省理工公开课 - 计算机科学及编程导论课程节选

"Not one of them ever showed me that it would be easy and free of difficulty or problems.

VOA: standard.2009.10.08

Getting valuable health information online for personal health problems is not always easy.

FORBES: HealthTap Q&A Site Connects Doctors And Patients

"The path will not be easy but I am convinced the problems will be solved faster and at a smaller cost if there is unity and consensus, " he told reporters.

BBC: New Greek Premier Lucas Papademos seeks unity over euro

Zuckerberg advised entrepreneurs to go after real problems, not settle for something easy.

FORBES: Mark Zuckerberg: Don't Just Start A Company, Do Something Fundamental