B1 dry dirt in the form of powder that covers surfaces inside a building, or very small dry pieces of soil, sand, or other substances灰尘;尘土;沙土
More examples
These china ornaments just collect dust.
He hit the ground with his stick and a puff of dust rose up into the air.
The truck went by in a swirl of dust.
I blew the dust off the books.
Erupting volcanoes discharge massive quantities of dust into the stratosphere.
[ I or T ] to use a cloth to remove dust from the surface of something擦去…的灰尘,给…除尘
[ T ] to cover something with a light powder在…上撒(粉末)
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