I knew I could not afford caviare.

我知道我是吃不起鱼子酱的。

youdao

I could not afford it, so I took another route.

可是我负担不起学费，所以我选择了另外一条路。

youdao

I told them I could not afford to pay for that.

我跟他们说，我负担不起那笔费用。

youdao

As previously stated, I could not afford a costly trial lawyer at the time of my case and was ordered deported.

FORBES: U.S. Needs Immigration Reform -- Part 2

The only other option was to claim nothing at all but then I would have had to resign because I could not afford to live half my life in London or Cumbria without an allowance for one of them.

BBC: Statement in full: David Maclean

At the same time, I do not believe it does and I do not believe we could ever afford to let it greatly impact our ability to pursue a foreign policy that's in our interest and in the interest of the world.

WHITEHOUSE: Press Briefing