名词形式：sadness
n. 悲哀；悲伤，悲痛；使人悲伤的事
I felt a deep sadness.
我感到深深的悲痛。
As the evening progressed, sadnessturned to rage.
随着夜晚的来临，悲伤变成了愤怒。
There was more than a hint of sadness in his voice.
他的声音中流露出了深切的悲伤。
Levin sat there, an expression of sadness on his face.
莱文坐在那里，神情忧伤。