But she was helpless in the viselike grip of the powerful man."

VOA: special.2009.08.24

They destroy these helpless but stoic humans who are chafing under their tyrannical and unjust and uncaring rule. In the biblical story, when the Israelites told the story, they modified it.

他们把那些在他们残暴，不公平统治下,无助又愤愤不平的人,全部消灭了，当犹太人来讲这个故事时，他们对此做了修改。

耶鲁公开课 - 旧约导论课程节选

You use "I can't help but" when you feel helpless, when you want to get something across that needs to happen.

当你觉得无助时，或者当你说明需要做到这件事情的时候，你就可以使用“I can't help but”句型。

I can't help but 课堂 - SpeakingMax英语口语达人