I must have been blind not to realize the danger we were in.

当时我一定是眼瞎了，竟然没有意识到我们所处的危险。

《牛津词典》

People failed to realize the danger of the virus.

人们没有意识到这种病毒的危险性。

youdao

Hardly did I realize the danger.

我几乎没有意识到危险！

youdao

And in Alabama, people don't realize the danger they're putting themselves in if they don't turn up the heat on a cold night.

FORBES: Magazine Article

They also realize of course the danger of entrants coming from the low end of the market to disrupt their industry, and that the internet is a huge enabler of this.

FORBES: Lies, Damned Lies and Piracy