名词
中文翻译：分级砾石
同义词：
['sorted gravel', 'graded sand例句：1. The road waspaved with graded gravel for easymaintenance.（这条道路铺设了分级砾石，便于维护。）2. The construction crew used graded gravel to level the site.（施工队伍使用分级砾石平整场地。）']
例句：
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1. The road waspaved with graded gravel for easymaintenance.
这条道路铺设了分级砾石，便于维护。
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2. The construction crew used graded gravel to level the site.
施工队伍使用分级砾石平整场地。
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3. The graded gravel in the driveway is perfect forparking cars.
车道上的分级砾石非常适合停放汽车。