副词
中文翻译：无趣地
同义词：
['inanely', 'indifferently']
例句：
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1.He laughed mirthlessly at the joke.
他冷漠地嘲笑那个笑话。
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2. She was mirthlessly silent after she heard the bad news.
听到这个坏消息后，她冷漠地保持沉默。
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3. The old man mirthlessly watched the sunset from his window.
老人冷漠地看着窗外的日落。