With such favourable conditions, we'll have no excuse if we fail to increase output.

条件这样好，再不增产，可说不过去。

《新英汉大辞典》

There's also a ready-made excuse if we fail: it wasn't inferior intelligence, talent or effort – it's just that the timing was wrong.

如果我们失败了，也有现成的借口：不是我的能力天赋或努力比别人少，只是时机不对罢了。

youdao

Even if we fail, we will not stop trying.

即使失败，我们也决不停止试验。

youdao

And the crisis had to be solved. "If we fail," Roosevelt said, "the cause of self-government throughout the world will suffer greatly."

VOA: special.2010.08.26

And if we fail, they will denounce us.

如果我们失败了，会遭到谴责。

普林斯顿公开课 - 国际座谈会课程节选

He says if we fail, then they are free to continue the drone attacks.

VOA: standard.2009.03.26

It is our fault if we fail to take the message we need to succeed.

FORBES: Your Reputation is No Joke - It's Your Super Power

America cannot long lead the family of nations if we fail the family here at home!

NPR: Transcript: Mitt Romney At The RNC

If we fail to act, our youth without skills may increasingly weaken our societies.

UNESCO: A lost generation in the making - 'Le Devoir' (Canada)