dental floss holder

例句：

1. 1.The dental floss holder is a small device that helps you hold your dental floss in place.
   牙线支架是一种小装置，可以帮助你固定牙线。
2. 2. The dental floss holder is designed to prevent the floss from slipping out of your hand while you are brushing your teeth.
   牙线支架设计用来防止在刷牙时牙线从手中滑脱。
3. 3. The dental floss holder is easy to use and can be stored in a drawer or on a countertop.
   牙线支架使用方便，可以放在抽屉里或柜台上。