有些人还是喜欢古老的家庭自备方法来增白牙齿，如用小苏打轻轻刷牙美白牙齿。

Some people still prefer the age-old home remedy of baking soda and a toothbrush to gently whiten teeth at home.

youdao

有些人还是喜欢古老的家庭自备方法来增白牙齿，如用小苏打轻轻刷牙美白牙齿。

Some people still prefer the age-old home remedy of baking soda and a toothbrush to gently whiten teeth at home.

youdao