3.拌药；撒粉；(火药等的)筛分；撒布；防腐粉 (＝dusting powder)。
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- The teeth of the saw were clogged with saw dust .
- Another of my great ideas bites the dust !
- The wagon and mules were covered with dust .
- They are watering the street to lay the dust .
- The mould is then covered to exclude dust .