形容词
中文翻译：不快乐的
同义词：
['unhappy', 'unhappy', 'unpleased']
例句：
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1. She felt joyless after thedisappointing news.
在那个令人失望的消息之后，她感到不快乐。
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2. The childrenwere joyless when they saw their toysscattered on the floor.
孩子们看到玩具散落在地上时，都显得不高兴。
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3. The oldcouple was joyless, as they hadlost their beloved dog.
这对老夫妇不高兴，因为他们失去了他们心爱的狗。