名词
中文翻译：Unknown
同义词：
['dull', 'lackluster', 'uninteresting', 'unappealing例句：1. The old painting had a dull glaze that made it look dated.（这幅旧画的釉面很暗淡，看起来过时了。）']
例句：
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1. The old painting had a dull glaze that made it look dated.
这幅旧画的釉面很暗淡，看起来过时了。
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2. The dish was too dull to be appetizing.
这道菜太平淡，无法引起食欲。
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3.The sun's rays were dull and weak, casting a gloomy shadow over the city.
太阳的光芒黯淡无力，给这座城市投下了一片阴霾。