刀钝石上磨，人蠢没奈何。

A blunt knife may be sharpened on a stone, but if a man is stupid there is no help for his stupidity.

这里他摇摇头，没奈何地苦笑了一下。

Here he shook his head and forced a bitter smile.

早上没赶上班车，没奈何只好步行去上班。

I missed the regular bus, so I had to go to work on foot.

但女儿是自己宠惯了的，林大娘又抵死偏护着，林先生没奈何只有苦笑。

But he had spoiled his daughter himself, and Mrs. Lin would take the girl's side no matter what the case might be. He smiled a helpless bitter smile.