HSK 6
口腔
kǒuqiāng名
oral cavity
医生提醒他注意口腔卫生。
Yī shēng tí xǐng tā zhù yì kǒu qiāng wèi shēng.
The doctor reminded him to pay attention to oral hygiene.
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New in the HSK 3.0 word list at level 6.