名词
中文翻译：不幸福
同义词：
['displeasure', 'unhappiness', 'unhappiness']
例句：
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1. She was very unhappy when she found out her boyfriend had cheated on her.
当她发现她的男朋友欺骗了她时，她非常不快乐。
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2. The news of the accident caused a lot of unhappiness among the passengers.
事故的消息使乘客们感到非常不快乐。
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3. They were all feeling unhappiness because of the bad weather.
由于天气不好，他们都感到不快乐。