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

父母经常感到无能为力，因为他们知道无论多少次拥抱也无法止住眼泪。

Children are dying, and I am helpless to do anything.

孩子们已奄奄一息，而我却无力做任何事情。

Once aboard we were soon helpless with laughter at the absurdity of it.

一上飞机我们就按捺不住，大笑起这事的荒唐。

They are not merely helpless victims.

他们并非无助的受害者。