There's no excuse for such behaviour.

这种行为说不过去。

《牛津词典》

There's no excuse for behaviour like that.

像那样的行为毫无道理。

《柯林斯英汉双解大词典》

There's no excuse for employees to have any confusion after a meeting.

雇员不得有任何借口在会后感到困惑。

youdao

If you're serious about deficit reduction, then there's no excuse to keep these loopholes open.

WHITEHOUSE: President Obama Announces the Fiscal Year 2014 Budget

If you love comics or pure action, there's no excuse for not playing Spider-Man.

CNN: Review: Spider-Man

And he says there's no excuse for the SEC's failure to investigate Madoff sooner.

NPR: Madoff Placed Under House Arrest