名词
中文翻译：悲伤
同义词：
['depression', 'melancholy', 'sorrow']
例句：
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1.I feel a deep sadness when I think of my lost friend.
一想到我失去的朋友，我就感到深深的悲伤。
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2.She was filled with sadness after the loss of her loved one.
她失去了爱人后，充满了悲伤。
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3. The sadness in his eyes spoke volumes about his recent heartbreak.
他眼中的悲伤透露出他对最近失恋的深深感慨。