他们不停地抱怨，但无济于事。

They keep complaining but to no avail.

改为以植物为主的饮食也无济于事。

Switching to a mainly plant-based diet wouldn't help.

她点燃火柴取暖，当然无济于事。

Around the end of the tale, she lights matches to warm herself to no avail.

你装糊涂是无济于事的.

It is no use pretending you did not know.

任凭你留多少眼泪，都无济于事。

No matter how much you cry.

进一步的两极对立将无济于事。

There will not be a solution through further polarization.

他们的精神 支持无济于事。

Their moral support isn't enough.

射杀和驱逐既不合适也无济于事。

Shooting and chasing are neither desirable nor effective.

空言无济于事.

Empty talk is of no avail.

他们也建造城镇和要塞，但无济于事。

They built themselves towns and fortresses, to no avail.