It was becoming more and more difficult to live on his salary.

他越来越难以靠他的工资维持生计了。

《牛津词典》

When using a "live" CD, it is at best difficult — and at worst, impossible — to install your own applications, or to customize existing applications.

当使用“活动的”CD时，要安装自己的应用程序或定制现有应用程序会非常困难，甚至不可能。

youdao

It is difficult to live with such mixed feelings, so they fade away1into the unconscious mind and only return in troubled dreams.

这些混杂的情感很难让人接受，所以它们被淡忘于潜意识里，只有在扰人的梦境中才会重现。

youdao

However,this is more difficult because it is harder to control the diets of people and because they live longer than other animals.

VOA: special.2009.09.01

Now the question is "how does it expand" and "why is it so difficult for us to understand, accept, assimilate and live according to the fact that we can make a difference, if we understand that what we need to understand is how change happens.

问题是“它如何扩大“,以及为什么我们难以理解，我们能够做出改变这个事实,并接受，被同化以及据此生活，如果我们能了解我们需要理解的,是改变如何发生。

哈佛公开课 - 幸福课课程节选

So they quickly passed a bill that made it much more difficult for Chinese citizens to come to live in the United States.

VOA: special.2010.03.11

If anything is begrudged, it is the passage by voters (through their representatives) of laws and regulations that make it more difficult to render assistance as they make it more difficult to live.

FORBES: The Faux Morality of Big Government and Anti-Gouging Laws

She said it had been difficult trying to reproduce the new album live because "it's so intimate in some respects and then so rude in other respects".

BBC: NEWS | UK | Wales | 'Right time' for Cerys' comeback

We live all over Scotland so it's difficult to meet up but we have vowed to have a 10-year anniversary - so we've got two years left to plan it!

BBC: Rhona Martin tips Great Britain for double medals