She's a bit heavy going.

她有点难缠。

《牛津词典》

I found the course rather heavy going.

我觉得这门课相当难。

《牛津词典》

I found such books too heavy going.

我觉得这样的书太难读下去。

youdao

But my chest felt heavy, and my heart pounded in my body as if it were going to explode.

VOA: special.2010.08.01

By the time you get to the end of the term, you're going to be dealing with some fairly complex things, so one of the things you're going to see is, we're going to make heavy use of libraries, or code written by others.

当你临近期末的时候，你们将要解决一些,相当复杂的难题，因此你们将会看到的其中一点是，我们要充分利用图书馆，或者别人编写的代码。

麻省理工公开课 - 计算机科学及编程导论课程节选

Methodology is going to loom heavy in the discussion of any science and that includes psychology.

在讨论包括心理学在内的任何科学时,研究方法是个重要的方面

耶鲁公开课 - 心理学导论课程节选

Some readers may find the mathematical chapters heavy going, but Mr Derbyshire makes a valiant attempt at explaining the mathematical ideas around the problem.

ECONOMIST: Mathematics

The decision is heavy going, even for lawyers.

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It sounded at first like a very heavy vehicle going past.

BBC: Cumbria quake: Your comments