dustier
adj.
布满灰尘的( dusty的比较级 );
灰尘弥漫的;
（对要求或问题）轻率的回绝;
毫无用处的回答;
例句:
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Set all of your mending up on the dustier shelves.
来自NEWYORKER
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For this we have to be thank Scorsese who encouraged the band to explore the dustier corners of their repertoire.
来自BBC