形容词
中文翻译：悲伤的
同义词：
['gloomy', 'gloomy', 'melancholy']
例句：
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1. She looked at the sadexpression on her friend's face.
她看着朋友脸上悲伤的表情。
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2. Thenews of his death wasa source of sadness to many.
他去世的消息让许多人感到悲伤。
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3.The old couple seemed to be in astate of sadness.
这对老夫妇似乎陷入了悲伤之中。