形容词
中文翻译：悲伤的
同义词：
['depressed', 'disheartened', 'melancholic']
例句：
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1. She looked at the sad expression on her friend's face.
她看着朋友悲伤的表情。
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2. The sad news of his passing broke our hearts.
他去世的消息让我们心碎。
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3. Sadness often comes with the loss of a loved one.
悲伤常常伴随着失去亲人的痛苦。