n.[U]

1. 堅硬
   Despite the hardness of his bed, he was soon sleeping soundly.

   雖然床很硬，他還是很快地睡熟了。

2. 【物】硬性；硬度
   The technician was sent to measure the hardiness of the material.

   這位技術員被派去測量材料的硬度。

3. 困難
   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。

4. 冷酷，嚴厲
   Her hardness of heart disappointed him.

   她冷酷的心使他失望。