Yī / shēng / xiàng / huàn / zhě / jiě / shì / sù / cì / kāng / shì / yì / zhǒng / chǔ / fāng / zhǐ / tòng / yào医生向患者解释,速赐康是一种处方止痛药。The doctor explained to the patient that pentazocine is a prescription painkiller.