常見例句雙語例句Face workers should wear dust mask.工人佩戴防塵口罩。TV, computer, dust mask, many people take for granted.電視機(jī)、電腦上蒙了灰塵,很多人會視而不見。www.jinanbaojie.com.cnsecurity can Haohao of white, and almost dust mask secular?安能以皓皓之白,而蒙世俗之塵埃乎?。權(quán)威例句An affidavit says authorities found a dust mask and other items that tested positive for ricin.NPR: 10 Things To Know For WednesdayThough it looks like a modest dust mask, the N95 is a triumph of materials science.FORBES: Keeping Bugs At BayTests 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 返回 dust mask