Definition
Indicates that no action or solution is possible.
无能为力
When the flood hit, the water rose so quickly that there wasn't a thing we could do.
当洪水来袭时，水位上升得如此之快，我们无能为力。
They've already made their decision, and there isn't a thing we can do about it.
他们已经做出了决定，我们对此无能为力。
I tried to persuade him, but his mind was made up, and there wasn't a thing I could do.
我试图说服他，但他已经下定决心，我无能为力。