She dusts every day.她每天都掸灰.He began to search for her through the bush, pulling up trees and raising the dusts.他开始在丛林中搜寻她, 拔起树木,扬起尘土.Recovery of valuable dusts and fumes for economic reasons is also a major application.从...

She dusts every day.她每天都掸灰.Recovery of valuable dusts and fumes for economic reasons is also a major application.从经济的角度回收有价值的粉尘和微尘也是其主要的应用方面.Health standard for flax, jute and ramie dusts in the air of workplace.车间空气中麻尘(...