n.堅硬；困難；嚴厲

Despite the hardness of his bed, he is soon sleeping soundly. 雖然床很硬，他還是很快地睡熟了。

I can't open the door with hardness of stone. 我不能打開那扇石門。

Their hardness was understood by the teacher. 他們的艱難得到老師的理解。

No hardness could stop him from pursuing his goals. 任何困難也阻擋不住他去追求他的目標。

He had slipped from hardness into affability. 他從聲色俱厲變得和顏悅色。