yī shēng / jiě shì / shuō / yá chǐ / mǐn gǎn / tōng cháng / yǔ / yá běn zhì / bào lù / yǒu guān医生解释说,牙齿敏感通常与牙本质暴露有关。The doctor explained that tooth sensitivity is usually related to exposed dentin.