there isn't a thing you can do

When the flood hit, the water rose so quickly that there wasn't a thing we could do.

當洪水來襲時，水位上升得如此之快，我們無能為力。

They've already made their decision, and there isn't a thing we can do about it.

他們已經做出了決定，我們對此無能為力。

I tried to persuade him, but his mind was made up, and there wasn't a thing I could do.

我試圖說服他，但他已經下定決心，我無能為力。