dust
名词 dust:
fine powdery material such as dry earth or pollen that can be blown about in the air
the remains of something that has been destroyed or broken up
同义词:debris, junk, rubble, detritus
free microscopic particles of solid material
动词 dust:
remove the dust from
rub the dust over a surface so as to blur the outlines of a shape
cover with a light dusting of a substance
distribute loosely