形容词
中文翻译：悲伤的
同义词：
['depressed', 'disheartened', 'melancholy']
例句：
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1. She looked at the sad expression on his face and felt a pang of sympathy.
她看着他脸上悲伤的表情，感到一阵同情。
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2. The news of their separation saddened her greatly.
他们分手的消息让她非常难过。
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3. His parents' divorce was a source of great sadness for him.
他的父母离婚给他带来了巨大的悲伤。