我知道牙刷和牙膏。

I know tooth brush and tooth paste.

youdao

对牙刷、牙线以及牙膏的选择进行了指导，并对其功能、作用和使用方法进行了概述。

The chose of tooth brush, tooth line as well as tooth paste are guided.

youdao

对牙刷、牙线以及牙膏的选择进行了指导，并对其功能、作用和使用方法进行了概述。

The chose of tooth brush, tooth line as well as tooth paste are guided.

youdao