It's natural to feel helpless against such abuse.

对这种虐待感到无能为力是自然的。

《牛津词典》

Parents often feel helpless, knowing that all the hugs in the world won't stop the tears.

家长们常常感到无能为力，知道世上所有的拥抱也不能止住眼泪。

《柯林斯英汉双解大词典》

I don't want to feel helpless.

我不想让自己感到懦弱无助。

youdao

Stress is more likely to be harmful if you feel helpless to deal with the problem or situation that causes the stress.

VOA: special.2009.03.24

And now, you're not the driver, you really feel helpless until you notice standing next to you, leaning over the bridge is a very fat man.

但你不是电车司机，你真的爱莫能助,直到你发现，在你旁边，靠着桥站着的,是个超级大胖子。

耶鲁公开课 - 公正课程节选

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

It's just been a humanitarian desire to do something, and not stand around and feel helpless.

BBC: Family affair became ?50m charity

Both feel helpless and acting feels better than waiting for life to take the known course.

FORBES: Should We Ration End Of Life Care?

While pension beneficiaries can feel helpless in the termination process today, prior to 1974 the situation was worse.

FORBES: PBGC Pension Termination: A Worker's Perspective by Terry O'Rourke, United airlines (December 15, 2007 )