微尘
6.We have not crushed the joy to the utmost to wring from it the wine of pain.
7.Producing a very great amount of long-lived radioactive fallout. Used of nuclear weapons.
8.The child ever dwells in the mystery of ageless time, unobscured by the dust of history.
9.the air near the foundry was always dirty; the air near the foundry was always dirty; a dirty bomb releases enormous amounts of long-lived radioactive fallout.
10.Diesel smoke and fine dust in the urban areas are the most imminent problems, causing a nuisance and constituting a serious health concern.

