This will clean the rest of the tooth's side surface and brush the loosened bacteria away from and off of the tooth.

这样就能清洁牙齿表面的其它地方并把疏松的细菌从牙齿上去除掉。

youdao

This will clean the rest of the tooth's side surface and brush the loosened bacteria away from and off of the tooth.

这样就能清洁牙齿表面的其它地方并把疏松的细菌从牙齿上去除掉。

youdao