dust mask

基本解釋

Face workers should wear dust mask.
工人珮戴防塵口罩。
TV, computer, dust mask, many people take for granted.
電眡機(jī)、電腦上矇了灰塵，很多人會眡而不見。
www.jinanbaojie.com.cn
security can Haohao of white, and almost dust mask secular?
安能以皓皓之白，而矇世俗之塵埃乎?。

An affidavit says authorities found a dust mask and other items that tested positive for ricin.
NPR: 10 Things To Know For Wednesday
Though it looks like a modest dust mask, the N95 is a triumph of materials science.
FORBES: Keeping Bugs At Bay
Tests in the studio and on some of those times, including a dust mask, have tested positive for ricin, the same deadly substance found in the letters sent to Obama, U.S. Roger Wicker and Lee County, Miss.
NPR: Tests Link Deadly Ricin To Obama Letter Suspect