The cold morning air made my nostrils sting.
清晨的冷空气让我的鼻孔刺痛。
The doctor told me to breathe in slowly through one nostril.
医生让我用一侧鼻孔慢慢吸气。
一个鼻孔是 nostril,两个是 nostrils。医学上单数为 naris,复数为 nares。