Because the normal word order is reversed in passive sentences, they are sometimes hard to follow.

由于正常语序在被动句中被颠倒过来了，所以有时很难理解。

《柯林斯英汉双解大词典》

I found the lecture hard to follow because it had started when I arrived.

我发现这个演讲很难听懂，因为我到这儿的时候，演讲就已经开始了。

youdao

Cash flow is both vital to a company and hard to follow.

现金流对于公司很重要和难以跟随。

youdao

Was the story hard to follow? Was it self-contradictory, and in what ways? Anything? Just don't even be polite, just throw it right out there. Yes?

有没有什么地方不连贯？或者自相矛盾？,有何矛盾？有吗？说出来，现在，在这里，好吗？

耶鲁公开课 - 旧约导论课程节选

It was a little hard to follow, but upon close inspection, it was also brutally fair.

WSJ: The NCAA Tournament Through the 'Alice in Wonderland' Looking Glass

The idea that there is no such thing wrong theory is hard to follow.

FORBES: The Founder of 21st Century Management: Peter Drucker

But spokeswoman Danielle Rau says most growers are trying hard to follow the rules.

NPR: Teen Farmworker's Heat Death Sparks Outcry