yī / shēng / tí / xǐng / jiā / zhǎng / jí / shí / gěi / hái / zi / jiē / zhòng / yì / miáo / yǐ / yù / fáng / xiǎo / ér / má / bì

医生提醒家长及时给孩子接种疫苗，以预防小儿麻痹。

The doctor reminded parents to vaccinate their children in time to prevent polio.