n.絲線；絲棉；牙線
v.用牙線清潔牙齒
This kind of floss is used for embroidery. 這種絲線用來刺繡。
I like to use dental floss rather than toothpick. 我喜歡使用牙線而非牙簽。
Make sure that you floss your teeth every night. 記得每天晚上都要用牙線來清潔牙齒。
