"they smoked up the room with their ceaseless puffing"
an act of forcible exhalation
例句
用作名词(n.)
He was puffing hard when he jumped on to the bus.他跳上公共汽车时喘息不已。
As a new technology of food manufacturing, puffing is getting widely used in food industry.膨化技术作为一种新型食品生产技术，正逐步在食品工业中得到广泛的应用。
It found that the retrogradation was not advantageous to puffing with the increasing degree or retrogradation, this disadvantageous effect was enhanced.淀粉的老化不利于微波膨化，并随着老化程度的增加，产品的膨化率不断下降。
