It is rather subtle and hard to understand exactly when ambiguities are resolved.

含糊短语的解析相当难以捉摸，难以确切理解。

youdao

Usually more than three types makes the design look cluttered and hard to understand.

通常超过三种的字体会使设计看起来凌乱而且难于理解。

youdao

It is easy to condemn the villains of the past and hard to understand the world that made them.

谴责历史上的恶人，很容易；了解造就恶人的世界，则很难。

youdao

Miz Cheek says the health care and finance industries are known for using language that is hard to understand.

VOA: special.2010.04.30

To use an ancient expression from the 1970's, which only John and I will appreciate, it's really hard to grok what that code is doing, to understand what it's trying to make happen.

我和约翰都会同意，70年代的一句话来概括，那就是很难理解编码的内容，以及它想要完成的工作。

麻省理工公开课 - 计算机科学及编程导论课程节选

So there's a lot of power in this, both engagement and both allowing students to get conceptual understandings of things that are very hard to understand and they're abstract.

所以这是很强大的，不论是参与性,还是使学生能更好,理解那些,很难的概念,很抽象的概念。

麻省理工公开课 - 媒体、教育、市场课程节选

The current system is convoluted and hard to understand for most people, and it makes it easy to hide behind excuses if promised technology fails to deliver.

FORBES: Fixing A Broken Biofuel Incentive Program

His speech is often slurred and hard to understand.

ECONOMIST: Charlemagne

The so-called Laeken declaration of December 2001, which launched the process of writing a new constitution to replace the existing treaties, talked of popular concerns about too many powers being exercised at European rather than national level, about the lack of democratic scrutiny, and about European institutions and practices being rigid and hard to understand.

ECONOMIST: European Union