Dentists advise their patients to brush and floss regularly to prevent their teeth from decaying. 牙医建议他们的病人定期刷牙并用洁牙线剔牙，以防止蛀牙。
I flossed my teeth. 我用牙线清洁牙齿。
Shape-set silk floss of a compound-layered structure is made by nonwoven technology mainly with waste silk from filatures and three-dimensionally crimpy fibres. 定形丝棉采用非织造布工艺，以缫丝厂的下脚废丝为主要原料与三维卷曲纤维组成复合层结构。
The umbilical cord can be tied with unwaxed dental floss, and cut on the far side of the time about two inches from the abdomen.The cut end should be painted with iodine to prevent infection. 脐带用消毒过的棉线系住，从距腹部3cm处剪断，断口需用碘酒消毒以防感染。