Definition
This phrase is used to express the futility of action in a difficult or unchangeable situation.
（用于表示对某情况无能为力时）你又能如何呢？
They've already made their decision, so what are you going to do?
他们已经做出决定了，所以你能怎么办呢？
Now that the situation has already happened, what are you going to do?
既然情况已经发生了，你能怎么办呢？
I tried to help, but he refused, so what are you going to do?
我试着帮忙，但他拒绝了，所以你能怎么办呢？