形容词
中文翻译：Unknown
同义词：
['dejected', 'disheartened', 'downhearted']
例句：
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1. Shewas downcast when she heard the bad news.
她听到那个坏消息时心情低落。
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2. The poor child was downcast after his parents left him alone.
那个可怜的孩子在父母离开他后心情低落。
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3. The old man looked downcast as he walked through the park.
老人走过公园时看起来心情低落。