词汇：deficiency

n. 缺乏；不足的数额；缺陷，缺点

相关场景

You can develop canker sores from a mouth injury, like biting the inside of your cheek, a viral infection, stress, or another health condition, such as a food allergy. You may be more likely to develop them if you have certain vitamin deficiencies.

口腔损伤，如咬脸颊内侧、病毒感染、压力或其他健康状况，如食物过敏，都可能导致口腔溃疡。如果你缺乏某些维生素，你更有可能患上口腔溃疡。

>> 16 Ways to Get Rid of Canker Sores 摆脱口疮