Yá / yī / jiàn / yì / wǒ / shǐ / yòng / hán / fú / yá / gāo / lái / bǎo / hù / yá / yòu / zhì

牙医建议我使用含氟牙膏来保护牙釉质。

The dentist recommended that I use fluoride toothpaste to protect my tooth enamel.