yī / shēng / jiǎn / chá / hòu / fā / xiàn / wǒ / de / yì / kē / yá / lǐ / miàn / yǒu / qǔ / dòng医生检查后发现,我的一颗牙里面有龋洞。After the examination, the dentist found a cavity in one of my teeth.